godot-docs/classes/class_array.rst

:github_url: hide

.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/Array.xml.

.. _class_Array:

Array
=====

A built-in data structure that holds a sequence of elements.

.. rst-class:: classref-introduction-group

Description
-----------

An array data structure that can contain a sequence of elements of any :ref:`Variant<class_Variant>` type. Elements are accessed by a numerical index starting at ``0``. Negative indices are used to count from the back (``-1`` is the last element, ``-2`` is the second to last, etc.).


.. tabs::

 .. code-tab:: gdscript

    var array = ["First", 2, 3, "Last"]
    print(array[0])  # Prints "First"
    print(array[2])  # Prints 3
    print(array[-1]) # Prints "Last"
    
    array[1] = "Second"
    print(array[1])  # Prints "Second"
    print(array[-3]) # Prints "Second"

 .. code-tab:: csharp

    var array = new Godot.Collections.Array{"First", 2, 3, "Last"};
    GD.Print(array[0]); // Prints "First"
    GD.Print(array[2]); // Prints 3
    GD.Print(array[array.Count - 1]); // Prints "Last"
    
    array[2] = "Second";
    GD.Print(array[1]); // Prints "Second"
    GD.Print(array[array.Count - 3]); // Prints "Second"



\ **Note:** Arrays are always passed by **reference**. To get a copy of an array that can be modified independently of the original array, use :ref:`duplicate<class_Array_method_duplicate>`.

\ **Note:** Erasing elements while iterating over arrays is **not** supported and will result in unpredictable behavior.

\ **Differences between packed arrays, typed arrays, and untyped arrays:** Packed arrays are generally faster to iterate on and modify compared to a typed array of the same type (e.g. :ref:`PackedInt64Array<class_PackedInt64Array>` versus ``Array[int]``). Also, packed arrays consume less memory. As a downside, packed arrays are less flexible as they don't offer as many convenience methods such as :ref:`map<class_Array_method_map>`. Typed arrays are in turn faster to iterate on and modify than untyped arrays.

.. note::

	There are notable differences when using this API with C#. See :ref:`doc_c_sharp_differences` for more information.

.. rst-class:: classref-reftable-group

Constructors
------------

.. table::
   :widths: auto

   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ )                                                                                                                                                           |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ base\: :ref:`Array<class_Array>`, type\: :ref:`int<class_int>`, class_name\: :ref:`StringName<class_StringName>`, script\: :ref:`Variant<class_Variant>`\ ) |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`Array<class_Array>`\ )                                                                                                                         |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedByteArray<class_PackedByteArray>`\ )                                                                                                     |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedColorArray<class_PackedColorArray>`\ )                                                                                                   |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedFloat32Array<class_PackedFloat32Array>`\ )                                                                                               |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedFloat64Array<class_PackedFloat64Array>`\ )                                                                                               |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedInt32Array<class_PackedInt32Array>`\ )                                                                                                   |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedInt64Array<class_PackedInt64Array>`\ )                                                                                                   |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedStringArray<class_PackedStringArray>`\ )                                                                                                 |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedVector2Array<class_PackedVector2Array>`\ )                                                                                               |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedVector3Array<class_PackedVector3Array>`\ )                                                                                               |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>` | :ref:`Array<class_Array_constructor_Array>`\ (\ from\: :ref:`PackedVector4Array<class_PackedVector4Array>`\ )                                                                                               |
   +---------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-reftable-group

Methods
-------

.. table::
   :widths: auto

   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`all<class_Array_method_all>`\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const|                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`any<class_Array_method_any>`\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const|                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`append<class_Array_method_append>`\ (\ value\: :ref:`Variant<class_Variant>`\ )                                                                                                                   |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`append_array<class_Array_method_append_array>`\ (\ array\: :ref:`Array<class_Array>`\ )                                                                                                           |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`assign<class_Array_method_assign>`\ (\ array\: :ref:`Array<class_Array>`\ )                                                                                                                       |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`back<class_Array_method_back>`\ (\ ) |const|                                                                                                                                                      |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`bsearch<class_Array_method_bsearch>`\ (\ value\: :ref:`Variant<class_Variant>`, before\: :ref:`bool<class_bool>` = true\ ) |const|                                                                |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`bsearch_custom<class_Array_method_bsearch_custom>`\ (\ value\: :ref:`Variant<class_Variant>`, func\: :ref:`Callable<class_Callable>`, before\: :ref:`bool<class_bool>` = true\ ) |const|          |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`clear<class_Array_method_clear>`\ (\ )                                                                                                                                                            |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`count<class_Array_method_count>`\ (\ value\: :ref:`Variant<class_Variant>`\ ) |const|                                                                                                             |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`           | :ref:`duplicate<class_Array_method_duplicate>`\ (\ deep\: :ref:`bool<class_bool>` = false\ ) |const|                                                                                                    |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`erase<class_Array_method_erase>`\ (\ value\: :ref:`Variant<class_Variant>`\ )                                                                                                                     |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`fill<class_Array_method_fill>`\ (\ value\: :ref:`Variant<class_Variant>`\ )                                                                                                                       |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`           | :ref:`filter<class_Array_method_filter>`\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const|                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`find<class_Array_method_find>`\ (\ what\: :ref:`Variant<class_Variant>`, from\: :ref:`int<class_int>` = 0\ ) |const|                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`find_custom<class_Array_method_find_custom>`\ (\ method\: :ref:`Callable<class_Callable>`, from\: :ref:`int<class_int>` = 0\ ) |const|                                                            |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`front<class_Array_method_front>`\ (\ ) |const|                                                                                                                                                    |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`get_typed_builtin<class_Array_method_get_typed_builtin>`\ (\ ) |const|                                                                                                                            |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`StringName<class_StringName>` | :ref:`get_typed_class_name<class_Array_method_get_typed_class_name>`\ (\ ) |const|                                                                                                                      |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`get_typed_script<class_Array_method_get_typed_script>`\ (\ ) |const|                                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`has<class_Array_method_has>`\ (\ value\: :ref:`Variant<class_Variant>`\ ) |const|                                                                                                                 |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`hash<class_Array_method_hash>`\ (\ ) |const|                                                                                                                                                      |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`insert<class_Array_method_insert>`\ (\ position\: :ref:`int<class_int>`, value\: :ref:`Variant<class_Variant>`\ )                                                                                 |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`is_empty<class_Array_method_is_empty>`\ (\ ) |const|                                                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`is_read_only<class_Array_method_is_read_only>`\ (\ ) |const|                                                                                                                                      |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`is_same_typed<class_Array_method_is_same_typed>`\ (\ array\: :ref:`Array<class_Array>`\ ) |const|                                                                                                 |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`             | :ref:`is_typed<class_Array_method_is_typed>`\ (\ ) |const|                                                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`make_read_only<class_Array_method_make_read_only>`\ (\ )                                                                                                                                          |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`           | :ref:`map<class_Array_method_map>`\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const|                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`max<class_Array_method_max>`\ (\ ) |const|                                                                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`min<class_Array_method_min>`\ (\ ) |const|                                                                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`pick_random<class_Array_method_pick_random>`\ (\ ) |const|                                                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`pop_at<class_Array_method_pop_at>`\ (\ position\: :ref:`int<class_int>`\ )                                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`pop_back<class_Array_method_pop_back>`\ (\ )                                                                                                                                                      |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`pop_front<class_Array_method_pop_front>`\ (\ )                                                                                                                                                    |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`push_back<class_Array_method_push_back>`\ (\ value\: :ref:`Variant<class_Variant>`\ )                                                                                                             |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`push_front<class_Array_method_push_front>`\ (\ value\: :ref:`Variant<class_Variant>`\ )                                                                                                           |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`       | :ref:`reduce<class_Array_method_reduce>`\ (\ method\: :ref:`Callable<class_Callable>`, accum\: :ref:`Variant<class_Variant>` = null\ ) |const|                                                          |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`remove_at<class_Array_method_remove_at>`\ (\ position\: :ref:`int<class_int>`\ )                                                                                                                  |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`resize<class_Array_method_resize>`\ (\ size\: :ref:`int<class_int>`\ )                                                                                                                            |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`reverse<class_Array_method_reverse>`\ (\ )                                                                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`rfind<class_Array_method_rfind>`\ (\ what\: :ref:`Variant<class_Variant>`, from\: :ref:`int<class_int>` = -1\ ) |const|                                                                           |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`rfind_custom<class_Array_method_rfind_custom>`\ (\ method\: :ref:`Callable<class_Callable>`, from\: :ref:`int<class_int>` = -1\ ) |const|                                                         |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`shuffle<class_Array_method_shuffle>`\ (\ )                                                                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`               | :ref:`size<class_Array_method_size>`\ (\ ) |const|                                                                                                                                                      |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`           | :ref:`slice<class_Array_method_slice>`\ (\ begin\: :ref:`int<class_int>`, end\: :ref:`int<class_int>` = 2147483647, step\: :ref:`int<class_int>` = 1, deep\: :ref:`bool<class_bool>` = false\ ) |const| |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`sort<class_Array_method_sort>`\ (\ )                                                                                                                                                              |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                              | :ref:`sort_custom<class_Array_method_sort_custom>`\ (\ func\: :ref:`Callable<class_Callable>`\ )                                                                                                        |
   +-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-reftable-group

Operators
---------

.. table::
   :widths: auto

   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`operator !=<class_Array_operator_neq_Array>`\ (\ right\: :ref:`Array<class_Array>`\ )  |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`     | :ref:`operator +<class_Array_operator_sum_Array>`\ (\ right\: :ref:`Array<class_Array>`\ )   |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`operator \<<class_Array_operator_lt_Array>`\ (\ right\: :ref:`Array<class_Array>`\ )   |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`operator \<=<class_Array_operator_lte_Array>`\ (\ right\: :ref:`Array<class_Array>`\ ) |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`operator ==<class_Array_operator_eq_Array>`\ (\ right\: :ref:`Array<class_Array>`\ )   |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`operator ><class_Array_operator_gt_Array>`\ (\ right\: :ref:`Array<class_Array>`\ )    |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`operator >=<class_Array_operator_gte_Array>`\ (\ right\: :ref:`Array<class_Array>`\ )  |
   +-------------------------------+----------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>` | :ref:`operator []<class_Array_operator_idx_int>`\ (\ index\: :ref:`int<class_int>`\ )        |
   +-------------------------------+----------------------------------------------------------------------------------------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Constructor Descriptions
------------------------

.. _class_Array_constructor_Array:

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ ) :ref:`🔗<class_Array_constructor_Array>`

Constructs an empty **Array**.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ base\: :ref:`Array<class_Array>`, type\: :ref:`int<class_int>`, class_name\: :ref:`StringName<class_StringName>`, script\: :ref:`Variant<class_Variant>`\ )

Creates a typed array from the ``base`` array. A typed array can only contain elements of the given type, or that inherit from the given class, as described by this constructor's parameters:

- ``type`` is the built-in :ref:`Variant<class_Variant>` type, as one the :ref:`Variant.Type<enum_@GlobalScope_Variant.Type>` constants.

- ``class_name`` is the built-in class name (see :ref:`Object.get_class<class_Object_method_get_class>`).

- ``script`` is the associated script. It must be a :ref:`Script<class_Script>` instance or ``null``.

If ``type`` is not :ref:`@GlobalScope.TYPE_OBJECT<class_@GlobalScope_constant_TYPE_OBJECT>`, ``class_name`` must be an empty :ref:`StringName<class_StringName>` and ``script`` must be ``null``.

::

    class_name Sword
    extends Node
    
    class Stats:
        pass
    
    func _ready():
        var a = Array([], TYPE_INT, "", null)               # Array[int]
        var b = Array([], TYPE_OBJECT, "Node", null)        # Array[Node]
        var c = Array([], TYPE_OBJECT, "Node", Sword)       # Array[Sword]
        var d = Array([], TYPE_OBJECT, "RefCounted", Stats) # Array[Stats]

The ``base`` array's elements are converted when necessary. If this is not possible or ``base`` is already typed, this constructor fails and returns an empty **Array**.

In GDScript, this constructor is usually not necessary, as it is possible to create a typed array through static typing:

::

    var numbers: Array[float] = []
    var children: Array[Node] = [$Node, $Sprite2D, $RigidBody3D]
    
    var integers: Array[int] = [0.2, 4.5, -2.0]
    print(integers) # Prints [0, 4, -2]

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`Array<class_Array>`\ )

Returns the same array as ``from``. If you need a copy of the array, use :ref:`duplicate<class_Array_method_duplicate>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedByteArray<class_PackedByteArray>`\ )

Constructs an array from a :ref:`PackedByteArray<class_PackedByteArray>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedColorArray<class_PackedColorArray>`\ )

Constructs an array from a :ref:`PackedColorArray<class_PackedColorArray>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedFloat32Array<class_PackedFloat32Array>`\ )

Constructs an array from a :ref:`PackedFloat32Array<class_PackedFloat32Array>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedFloat64Array<class_PackedFloat64Array>`\ )

Constructs an array from a :ref:`PackedFloat64Array<class_PackedFloat64Array>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedInt32Array<class_PackedInt32Array>`\ )

Constructs an array from a :ref:`PackedInt32Array<class_PackedInt32Array>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedInt64Array<class_PackedInt64Array>`\ )

Constructs an array from a :ref:`PackedInt64Array<class_PackedInt64Array>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedStringArray<class_PackedStringArray>`\ )

Constructs an array from a :ref:`PackedStringArray<class_PackedStringArray>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedVector2Array<class_PackedVector2Array>`\ )

Constructs an array from a :ref:`PackedVector2Array<class_PackedVector2Array>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedVector3Array<class_PackedVector3Array>`\ )

Constructs an array from a :ref:`PackedVector3Array<class_PackedVector3Array>`.

.. rst-class:: classref-item-separator

----

.. rst-class:: classref-constructor

:ref:`Array<class_Array>` **Array**\ (\ from\: :ref:`PackedVector4Array<class_PackedVector4Array>`\ )

Constructs an array from a :ref:`PackedVector4Array<class_PackedVector4Array>`.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_Array_method_all:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **all**\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const| :ref:`🔗<class_Array_method_all>`

Calls the given :ref:`Callable<class_Callable>` on each element in the array and returns ``true`` if the :ref:`Callable<class_Callable>` returns ``true`` for *all* elements in the array. If the :ref:`Callable<class_Callable>` returns ``false`` for one array element or more, this method returns ``false``.

The ``method`` should take one :ref:`Variant<class_Variant>` parameter (the current array element) and return a :ref:`bool<class_bool>`.


.. tabs::

 .. code-tab:: gdscript

    func greater_than_5(number):
        return number > 5
    
    func _ready():
        print([6, 10, 6].all(greater_than_5)) # Prints true (3/3 elements evaluate to true).
        print([4, 10, 4].all(greater_than_5)) # Prints false (1/3 elements evaluate to true).
        print([4, 4, 4].all(greater_than_5))  # Prints false (0/3 elements evaluate to true).
        print([].all(greater_than_5))         # Prints true (0/0 elements evaluate to true).
    
        # Same as the first line above, but using a lambda function.
        print([6, 10, 6].all(func(element): return element > 5)) # Prints true

 .. code-tab:: csharp

    private static bool GreaterThan5(int number)
    {
        return number > 5;
    }
    
    public override void _Ready()
    {
        // Prints true (3/3 elements evaluate to true).
        GD.Print(new Godot.Collections.Array>int< { 6, 10, 6 }.All(GreaterThan5));
        // Prints false (1/3 elements evaluate to true).
        GD.Print(new Godot.Collections.Array>int< { 4, 10, 4 }.All(GreaterThan5));
        // Prints false (0/3 elements evaluate to true).
        GD.Print(new Godot.Collections.Array>int< { 4, 4, 4 }.All(GreaterThan5));
        // Prints true (0/0 elements evaluate to true).
        GD.Print(new Godot.Collections.Array>int< { }.All(GreaterThan5));
    
        // Same as the first line above, but using a lambda function.
        GD.Print(new Godot.Collections.Array>int< { 6, 10, 6 }.All(element => element > 5)); // Prints true
    }



See also :ref:`any<class_Array_method_any>`, :ref:`filter<class_Array_method_filter>`, :ref:`map<class_Array_method_map>` and :ref:`reduce<class_Array_method_reduce>`.

\ **Note:** Unlike relying on the size of an array returned by :ref:`filter<class_Array_method_filter>`, this method will return as early as possible to improve performance (especially with large arrays).

\ **Note:** For an empty array, this method `always <https://en.wikipedia.org/wiki/Vacuous_truth>`__ returns ``true``.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_any:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **any**\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const| :ref:`🔗<class_Array_method_any>`

Calls the given :ref:`Callable<class_Callable>` on each element in the array and returns ``true`` if the :ref:`Callable<class_Callable>` returns ``true`` for *one or more* elements in the array. If the :ref:`Callable<class_Callable>` returns ``false`` for all elements in the array, this method returns ``false``.

The ``method`` should take one :ref:`Variant<class_Variant>` parameter (the current array element) and return a :ref:`bool<class_bool>`.

::

    func greater_than_5(number):
        return number > 5
    
    func _ready():
        print([6, 10, 6].any(greater_than_5)) # Prints true (3 elements evaluate to true).
        print([4, 10, 4].any(greater_than_5)) # Prints true (1 elements evaluate to true).
        print([4, 4, 4].any(greater_than_5))  # Prints false (0 elements evaluate to true).
        print([].any(greater_than_5))         # Prints false (0 elements evaluate to true).
    
        # Same as the first line above, but using a lambda function.
        print([6, 10, 6].any(func(number): return number > 5)) # Prints true

See also :ref:`all<class_Array_method_all>`, :ref:`filter<class_Array_method_filter>`, :ref:`map<class_Array_method_map>` and :ref:`reduce<class_Array_method_reduce>`.

\ **Note:** Unlike relying on the size of an array returned by :ref:`filter<class_Array_method_filter>`, this method will return as early as possible to improve performance (especially with large arrays).

\ **Note:** For an empty array, this method always returns ``false``.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_append:

.. rst-class:: classref-method

|void| **append**\ (\ value\: :ref:`Variant<class_Variant>`\ ) :ref:`🔗<class_Array_method_append>`

Appends ``value`` at the end of the array (alias of :ref:`push_back<class_Array_method_push_back>`).

.. rst-class:: classref-item-separator

----

.. _class_Array_method_append_array:

.. rst-class:: classref-method

|void| **append_array**\ (\ array\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_method_append_array>`

Appends another ``array`` at the end of this array.

::

    var numbers = [1, 2, 3]
    var extra = [4, 5, 6]
    numbers.append_array(extra)
    print(numbers) # Prints [1, 2, 3, 4, 5, 6]

.. rst-class:: classref-item-separator

----

.. _class_Array_method_assign:

.. rst-class:: classref-method

|void| **assign**\ (\ array\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_method_assign>`

Assigns elements of another ``array`` into the array. Resizes the array to match ``array``. Performs type conversions if the array is typed.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_back:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **back**\ (\ ) |const| :ref:`🔗<class_Array_method_back>`

Returns the last element of the array. If the array is empty, fails and returns ``null``. See also :ref:`front<class_Array_method_front>`.

\ **Note:** Unlike with the ``[]`` operator (``array[-1]``), an error is generated without stopping project execution.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_bsearch:

.. rst-class:: classref-method

:ref:`int<class_int>` **bsearch**\ (\ value\: :ref:`Variant<class_Variant>`, before\: :ref:`bool<class_bool>` = true\ ) |const| :ref:`🔗<class_Array_method_bsearch>`

Returns the index of ``value`` in the sorted array. If it cannot be found, returns where ``value`` should be inserted to keep the array sorted. The algorithm used is `binary search <https://en.wikipedia.org/wiki/Binary_search_algorithm>`__.

If ``before`` is ``true`` (as by default), the returned index comes before all existing elements equal to ``value`` in the array.

::

    var numbers = [2, 4, 8, 10]
    var idx = numbers.bsearch(7)
    
    numbers.insert(idx, 7)
    print(numbers) # Prints [2, 4, 7, 8, 10]
    
    var fruits = ["Apple", "Lemon", "Lemon", "Orange"]
    print(fruits.bsearch("Lemon", true))  # Prints 1, points at the first "Lemon".
    print(fruits.bsearch("Lemon", false)) # Prints 3, points at "Orange".

\ **Note:** Calling :ref:`bsearch<class_Array_method_bsearch>` on an *unsorted* array will result in unexpected behavior. Use :ref:`sort<class_Array_method_sort>` before calling this method.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_bsearch_custom:

.. rst-class:: classref-method

:ref:`int<class_int>` **bsearch_custom**\ (\ value\: :ref:`Variant<class_Variant>`, func\: :ref:`Callable<class_Callable>`, before\: :ref:`bool<class_bool>` = true\ ) |const| :ref:`🔗<class_Array_method_bsearch_custom>`

Returns the index of ``value`` in the sorted array. If it cannot be found, returns where ``value`` should be inserted to keep the array sorted (using ``func`` for the comparisons). The algorithm used is `binary search <https://en.wikipedia.org/wiki/Binary_search_algorithm>`__.

Similar to :ref:`sort_custom<class_Array_method_sort_custom>`, ``func`` is called as many times as necessary, receiving one array element and ``value`` as arguments. The function should return ``true`` if the array element should be *behind* ``value``, otherwise it should return ``false``.

If ``before`` is ``true`` (as by default), the returned index comes before all existing elements equal to ``value`` in the array.

::

    func sort_by_amount(a, b):
        if a[1] < b[1]:
            return true
        return false
    
    func _ready():
        var my_items = [["Tomato", 2], ["Kiwi", 5], ["Rice", 9]]
    
        var apple = ["Apple", 5]
        # "Apple" is inserted before "Kiwi".
        my_items.insert(my_items.bsearch_custom(apple, sort_by_amount, true), apple)
    
        var banana = ["Banana", 5]
        # "Banana" is inserted after "Kiwi".
        my_items.insert(my_items.bsearch_custom(banana, sort_by_amount, false), banana)
    
        # Prints [["Tomato", 2], ["Apple", 5], ["Kiwi", 5], ["Banana", 5], ["Rice", 9]]
        print(my_items)

\ **Note:** Calling :ref:`bsearch_custom<class_Array_method_bsearch_custom>` on an *unsorted* array will result in unexpected behavior. Use :ref:`sort_custom<class_Array_method_sort_custom>` with ``func`` before calling this method.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_clear:

.. rst-class:: classref-method

|void| **clear**\ (\ ) :ref:`🔗<class_Array_method_clear>`

Removes all elements from the array. This is equivalent to using :ref:`resize<class_Array_method_resize>` with a size of ``0``.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **count**\ (\ value\: :ref:`Variant<class_Variant>`\ ) |const| :ref:`🔗<class_Array_method_count>`

Returns the number of times an element is in the array.

To count how many elements in an array satisfy a condition, see :ref:`reduce<class_Array_method_reduce>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_duplicate:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **duplicate**\ (\ deep\: :ref:`bool<class_bool>` = false\ ) |const| :ref:`🔗<class_Array_method_duplicate>`

Returns a new copy of the array.

By default, a **shallow** copy is returned: all nested **Array** and :ref:`Dictionary<class_Dictionary>` elements are shared with the original array. Modifying them in one array will also affect them in the other.

If ``deep`` is ``true``, a **deep** copy is returned: all nested arrays and dictionaries are also duplicated (recursively).

.. rst-class:: classref-item-separator

----

.. _class_Array_method_erase:

.. rst-class:: classref-method

|void| **erase**\ (\ value\: :ref:`Variant<class_Variant>`\ ) :ref:`🔗<class_Array_method_erase>`

Finds and removes the first occurrence of ``value`` from the array. If ``value`` does not exist in the array, nothing happens. To remove an element by index, use :ref:`remove_at<class_Array_method_remove_at>` instead.

\ **Note:** This method shifts every element's index after the removed ``value`` back, which may have a noticeable performance cost, especially on larger arrays.

\ **Note:** Erasing elements while iterating over arrays is **not** supported and will result in unpredictable behavior.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_fill:

.. rst-class:: classref-method

|void| **fill**\ (\ value\: :ref:`Variant<class_Variant>`\ ) :ref:`🔗<class_Array_method_fill>`

Assigns the given ``value`` to all elements in the array.

This method can often be combined with :ref:`resize<class_Array_method_resize>` to create an array with a given size and initialized elements:


.. tabs::

 .. code-tab:: gdscript

    var array = []
    array.resize(5)
    array.fill(2)
    print(array) # Prints [2, 2, 2, 2, 2]

 .. code-tab:: csharp

    var array = new Godot.Collections.Array();
    array.Resize(5);
    array.Fill(2);
    GD.Print(array); // Prints [2, 2, 2, 2, 2]



\ **Note:** If ``value`` is a :ref:`Variant<class_Variant>` passed by reference (:ref:`Object<class_Object>`-derived, **Array**, :ref:`Dictionary<class_Dictionary>`, etc.), the array will be filled with references to the same ``value``, which are not duplicates.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_filter:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **filter**\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const| :ref:`🔗<class_Array_method_filter>`

Calls the given :ref:`Callable<class_Callable>` on each element in the array and returns a new, filtered **Array**.

The ``method`` receives one of the array elements as an argument, and should return ``true`` to add the element to the filtered array, or ``false`` to exclude it.

::

    func is_even(number):
        return number % 2 == 0
    
    func _ready():
        print([1, 4, 5, 8].filter(is_even)) # Prints [4, 8]
    
        # Same as above, but using a lambda function.
        print([1, 4, 5, 8].filter(func(number): return number % 2 == 0))

See also :ref:`any<class_Array_method_any>`, :ref:`all<class_Array_method_all>`, :ref:`map<class_Array_method_map>` and :ref:`reduce<class_Array_method_reduce>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_find:

.. rst-class:: classref-method

:ref:`int<class_int>` **find**\ (\ what\: :ref:`Variant<class_Variant>`, from\: :ref:`int<class_int>` = 0\ ) |const| :ref:`🔗<class_Array_method_find>`

Returns the index of the **first** occurrence of ``what`` in this array, or ``-1`` if there are none. The search's start can be specified with ``from``, continuing to the end of the array.

\ **Note:** If you just want to know whether the array contains ``what``, use :ref:`has<class_Array_method_has>` (``Contains`` in C#). In GDScript, you may also use the ``in`` operator.

\ **Note:** For performance reasons, the search is affected by ``what``'s :ref:`Variant.Type<enum_@GlobalScope_Variant.Type>`. For example, ``7`` (:ref:`int<class_int>`) and ``7.0`` (:ref:`float<class_float>`) are not considered equal for this method.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_find_custom:

.. rst-class:: classref-method

:ref:`int<class_int>` **find_custom**\ (\ method\: :ref:`Callable<class_Callable>`, from\: :ref:`int<class_int>` = 0\ ) |const| :ref:`🔗<class_Array_method_find_custom>`

Returns the index of the **first** element in the array that causes ``method`` to return ``true``, or ``-1`` if there are none. The search's start can be specified with ``from``, continuing to the end of the array.

\ ``method`` is a callable that takes an element of the array, and returns a :ref:`bool<class_bool>`.

\ **Note:** If you just want to know whether the array contains *anything* that satisfies ``method``, use :ref:`any<class_Array_method_any>`.


.. tabs::

 .. code-tab:: gdscript

    func is_even(number):
        return number % 2 == 0
    
    func _ready():
        print([1, 3, 4, 7].find_custom(is_even.bind())) # prints 2



.. rst-class:: classref-item-separator

----

.. _class_Array_method_front:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **front**\ (\ ) |const| :ref:`🔗<class_Array_method_front>`

Returns the first element of the array. If the array is empty, fails and returns ``null``. See also :ref:`back<class_Array_method_back>`.

\ **Note:** Unlike with the ``[]`` operator (``array[0]``), an error is generated without stopping project execution.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_get_typed_builtin:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_typed_builtin**\ (\ ) |const| :ref:`🔗<class_Array_method_get_typed_builtin>`

Returns the built-in :ref:`Variant<class_Variant>` type of the typed array as a :ref:`Variant.Type<enum_@GlobalScope_Variant.Type>` constant. If the array is not typed, returns :ref:`@GlobalScope.TYPE_NIL<class_@GlobalScope_constant_TYPE_NIL>`. See also :ref:`is_typed<class_Array_method_is_typed>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_get_typed_class_name:

.. rst-class:: classref-method

:ref:`StringName<class_StringName>` **get_typed_class_name**\ (\ ) |const| :ref:`🔗<class_Array_method_get_typed_class_name>`

Returns the **built-in** class name of the typed array, if the built-in :ref:`Variant<class_Variant>` type :ref:`@GlobalScope.TYPE_OBJECT<class_@GlobalScope_constant_TYPE_OBJECT>`. Otherwise, returns an empty :ref:`StringName<class_StringName>`. See also :ref:`is_typed<class_Array_method_is_typed>` and :ref:`Object.get_class<class_Object_method_get_class>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_get_typed_script:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **get_typed_script**\ (\ ) |const| :ref:`🔗<class_Array_method_get_typed_script>`

Returns the :ref:`Script<class_Script>` instance associated with this typed array, or ``null`` if it does not exist. See also :ref:`is_typed<class_Array_method_is_typed>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_has:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **has**\ (\ value\: :ref:`Variant<class_Variant>`\ ) |const| :ref:`🔗<class_Array_method_has>`

Returns ``true`` if the array contains the given ``value``.


.. tabs::

 .. code-tab:: gdscript

    print(["inside", 7].has("inside"))  # Prints true
    print(["inside", 7].has("outside")) # Prints false
    print(["inside", 7].has(7))         # Prints true
    print(["inside", 7].has("7"))       # Prints false

 .. code-tab:: csharp

    var arr = new Godot.Collections.Array { "inside", 7 };
    // By C# convention, this method is renamed to `Contains`.
    GD.Print(arr.Contains("inside"));  // Prints true
    GD.Print(arr.Contains("outside")); // Prints false
    GD.Print(arr.Contains(7));         // Prints true
    GD.Print(arr.Contains("7"));       // Prints false



In GDScript, this is equivalent to the ``in`` operator:

::

    if 4 in [2, 4, 6, 8]:
        print("4 is here!") # Will be printed.

\ **Note:** For performance reasons, the search is affected by the ``value``'s :ref:`Variant.Type<enum_@GlobalScope_Variant.Type>`. For example, ``7`` (:ref:`int<class_int>`) and ``7.0`` (:ref:`float<class_float>`) are not considered equal for this method.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_hash:

.. rst-class:: classref-method

:ref:`int<class_int>` **hash**\ (\ ) |const| :ref:`🔗<class_Array_method_hash>`

Returns a hashed 32-bit integer value representing the array and its contents.

\ **Note:** Arrays with equal hash values are *not* guaranteed to be the same, as a result of hash collisions. On the countrary, arrays with different hash values are guaranteed to be different.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_insert:

.. rst-class:: classref-method

:ref:`int<class_int>` **insert**\ (\ position\: :ref:`int<class_int>`, value\: :ref:`Variant<class_Variant>`\ ) :ref:`🔗<class_Array_method_insert>`

Inserts a new element (``value``) at a given index (``position``) in the array. ``position`` should be between ``0`` and the array's :ref:`size<class_Array_method_size>`.

Returns :ref:`@GlobalScope.OK<class_@GlobalScope_constant_OK>` on success, or one of the other :ref:`Error<enum_@GlobalScope_Error>` constants if this method fails.

\ **Note:** Every element's index after ``position`` needs to be shifted forward, which may have a noticeable performance cost, especially on larger arrays.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_is_empty:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_empty**\ (\ ) |const| :ref:`🔗<class_Array_method_is_empty>`

Returns ``true`` if the array is empty (``[]``). See also :ref:`size<class_Array_method_size>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_is_read_only:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_read_only**\ (\ ) |const| :ref:`🔗<class_Array_method_is_read_only>`

Returns ``true`` if the array is read-only. See :ref:`make_read_only<class_Array_method_make_read_only>`.

In GDScript, arrays are automatically read-only if declared with the ``const`` keyword.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_is_same_typed:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_same_typed**\ (\ array\: :ref:`Array<class_Array>`\ ) |const| :ref:`🔗<class_Array_method_is_same_typed>`

Returns ``true`` if this array is typed the same as the given ``array``. See also :ref:`is_typed<class_Array_method_is_typed>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_is_typed:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_typed**\ (\ ) |const| :ref:`🔗<class_Array_method_is_typed>`

Returns ``true`` if the array is typed. Typed arrays can only contain elements of a specific type, as defined by the typed array constructor. The methods of a typed array are still expected to return a generic :ref:`Variant<class_Variant>`.

In GDScript, it is possible to define a typed array with static typing:

::

    var numbers: Array[float] = [0.2, 4.2, -2.0]
    print(numbers.is_typed()) # Prints true

.. rst-class:: classref-item-separator

----

.. _class_Array_method_make_read_only:

.. rst-class:: classref-method

|void| **make_read_only**\ (\ ) :ref:`🔗<class_Array_method_make_read_only>`

Makes the array read-only. The array's elements cannot be overridden with different values, and their order cannot change. Does not apply to nested elements, such as dictionaries.

In GDScript, arrays are automatically read-only if declared with the ``const`` keyword.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_map:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **map**\ (\ method\: :ref:`Callable<class_Callable>`\ ) |const| :ref:`🔗<class_Array_method_map>`

Calls the given :ref:`Callable<class_Callable>` for each element in the array and returns a new array filled with values returned by the ``method``.

The ``method`` should take one :ref:`Variant<class_Variant>` parameter (the current array element) and can return any :ref:`Variant<class_Variant>`.

::

    func double(number):
        return number * 2
    
    func _ready():
        print([1, 2, 3].map(double)) # Prints [2, 4, 6]
    
        # Same as above, but using a lambda function.
        print([1, 2, 3].map(func(element): return element * 2))

See also :ref:`filter<class_Array_method_filter>`, :ref:`reduce<class_Array_method_reduce>`, :ref:`any<class_Array_method_any>` and :ref:`all<class_Array_method_all>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_max:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **max**\ (\ ) |const| :ref:`🔗<class_Array_method_max>`

Returns the maximum value contained in the array, if all elements can be compared. Otherwise, returns ``null``. See also :ref:`min<class_Array_method_min>`.

To find the maximum value using a custom comparator, you can use :ref:`reduce<class_Array_method_reduce>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_min:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **min**\ (\ ) |const| :ref:`🔗<class_Array_method_min>`

Returns the minimum value contained in the array, if all elements can be compared. Otherwise, returns ``null``. See also :ref:`max<class_Array_method_max>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_pick_random:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **pick_random**\ (\ ) |const| :ref:`🔗<class_Array_method_pick_random>`

Returns a random element from the array. Generates an error and returns ``null`` if the array is empty.


.. tabs::

 .. code-tab:: gdscript

    # May print 1, 2, 3.25, or "Hi".
    print([1, 2, 3.25, "Hi"].pick_random())

 .. code-tab:: csharp

    var array = new Godot.Collections.Array { 1, 2, 3.25f, "Hi" };
    GD.Print(array.PickRandom()); // May print 1, 2, 3.25, or "Hi".



\ **Note:** Like many similar functions in the engine (such as :ref:`@GlobalScope.randi<class_@GlobalScope_method_randi>` or :ref:`shuffle<class_Array_method_shuffle>`), this method uses a common, global random seed. To get a predictable outcome from this method, see :ref:`@GlobalScope.seed<class_@GlobalScope_method_seed>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_pop_at:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **pop_at**\ (\ position\: :ref:`int<class_int>`\ ) :ref:`🔗<class_Array_method_pop_at>`

Removes and returns the element of the array at index ``position``. If negative, ``position`` is considered relative to the end of the array. Returns ``null`` if the array is empty. If ``position`` is out of bounds, an error message is also generated.

\ **Note:** This method shifts every element's index after ``position`` back, which may have a noticeable performance cost, especially on larger arrays.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_pop_back:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **pop_back**\ (\ ) :ref:`🔗<class_Array_method_pop_back>`

Removes and returns the last element of the array. Returns ``null`` if the array is empty, without generating an error. See also :ref:`pop_front<class_Array_method_pop_front>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_pop_front:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **pop_front**\ (\ ) :ref:`🔗<class_Array_method_pop_front>`

Removes and returns the first element of the array. Returns ``null`` if the array is empty, without generating an error. See also :ref:`pop_back<class_Array_method_pop_back>`.

\ **Note:** This method shifts every other element's index back, which may have a noticeable performance cost, especially on larger arrays.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_push_back:

.. rst-class:: classref-method

|void| **push_back**\ (\ value\: :ref:`Variant<class_Variant>`\ ) :ref:`🔗<class_Array_method_push_back>`

Appends an element at the end of the array. See also :ref:`push_front<class_Array_method_push_front>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_push_front:

.. rst-class:: classref-method

|void| **push_front**\ (\ value\: :ref:`Variant<class_Variant>`\ ) :ref:`🔗<class_Array_method_push_front>`

Adds an element at the beginning of the array. See also :ref:`push_back<class_Array_method_push_back>`.

\ **Note:** This method shifts every other element's index forward, which may have a noticeable performance cost, especially on larger arrays.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_reduce:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **reduce**\ (\ method\: :ref:`Callable<class_Callable>`, accum\: :ref:`Variant<class_Variant>` = null\ ) |const| :ref:`🔗<class_Array_method_reduce>`

Calls the given :ref:`Callable<class_Callable>` for each element in array, accumulates the result in ``accum``, then returns it.

The ``method`` takes two arguments: the current value of ``accum`` and the current array element. If ``accum`` is ``null`` (as by default), the iteration will start from the second element, with the first one used as initial value of ``accum``.

::

    func sum(accum, number):
        return accum + number
    
    func _ready():
        print([1, 2, 3].reduce(sum, 0))  # Prints 6
        print([1, 2, 3].reduce(sum, 10)) # Prints 16
    
        # Same as above, but using a lambda function.
        print([1, 2, 3].reduce(func(accum, number): return accum + number, 10))

If :ref:`max<class_Array_method_max>` is not desirable, this method may also be used to implement a custom comparator:

::

    func _ready():
        var arr = [Vector2(5, 0), Vector2(3, 4), Vector2(1, 2)]
    
        var longest_vec = arr.reduce(func(max, vec): return vec if is_length_greater(vec, max) else max)
        print(longest_vec) # Prints Vector2(3, 4).
    
    func is_length_greater(a, b):
        return a.length() > b.length()

This method can also be used to count how many elements in an array satisfy a certain condition, similar to :ref:`count<class_Array_method_count>`:

::

    func is_even(number):
        return number % 2 == 0
    
    func _ready():
        var arr = [1, 2, 3, 4, 5]
        # Increment count if it's even, else leaves count the same.
        var even_count = arr.reduce(func(count, next): return count + 1 if is_even(next) else count, 0)
        print(even_count) # Prints 2

See also :ref:`map<class_Array_method_map>`, :ref:`filter<class_Array_method_filter>`, :ref:`any<class_Array_method_any>` and :ref:`all<class_Array_method_all>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_remove_at:

.. rst-class:: classref-method

|void| **remove_at**\ (\ position\: :ref:`int<class_int>`\ ) :ref:`🔗<class_Array_method_remove_at>`

Removes the element from the array at the given index (``position``). If the index is out of bounds, this method fails.

If you need to return the removed element, use :ref:`pop_at<class_Array_method_pop_at>`. To remove an element by value, use :ref:`erase<class_Array_method_erase>` instead.

\ **Note:** This method shifts every element's index after ``position`` back, which may have a noticeable performance cost, especially on larger arrays.

\ **Note:** The ``position`` cannot be negative. To remove an element relative to the end of the array, use ``arr.remove_at(arr.size() - (i + 1))``. To remove the last element from the array, use ``arr.resize(arr.size() - 1)``.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_resize:

.. rst-class:: classref-method

:ref:`int<class_int>` **resize**\ (\ size\: :ref:`int<class_int>`\ ) :ref:`🔗<class_Array_method_resize>`

Sets the array's number of elements to ``size``. If ``size`` is smaller than the array's current size, the elements at the end are removed. If ``size`` is greater, new default elements (usually ``null``) are added, depending on the array's type.

Returns :ref:`@GlobalScope.OK<class_@GlobalScope_constant_OK>` on success, or one of the other :ref:`Error<enum_@GlobalScope_Error>` constants if this method fails.

\ **Note:** Calling this method once and assigning the new values is faster than calling :ref:`append<class_Array_method_append>` for every new element.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_reverse:

.. rst-class:: classref-method

|void| **reverse**\ (\ ) :ref:`🔗<class_Array_method_reverse>`

Reverses the order of all elements in the array.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_rfind:

.. rst-class:: classref-method

:ref:`int<class_int>` **rfind**\ (\ what\: :ref:`Variant<class_Variant>`, from\: :ref:`int<class_int>` = -1\ ) |const| :ref:`🔗<class_Array_method_rfind>`

Returns the index of the **last** occurrence of ``what`` in this array, or ``-1`` if there are none. The search's start can be specified with ``from``, continuing to the beginning of the array. This method is the reverse of :ref:`find<class_Array_method_find>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_rfind_custom:

.. rst-class:: classref-method

:ref:`int<class_int>` **rfind_custom**\ (\ method\: :ref:`Callable<class_Callable>`, from\: :ref:`int<class_int>` = -1\ ) |const| :ref:`🔗<class_Array_method_rfind_custom>`

Returns the index of the **last** element of the array that causes ``method`` to return ``true``, or ``-1`` if there are none. The search's start can be specified with ``from``, continuing to the beginning of the array. This method is the reverse of :ref:`find_custom<class_Array_method_find_custom>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_shuffle:

.. rst-class:: classref-method

|void| **shuffle**\ (\ ) :ref:`🔗<class_Array_method_shuffle>`

Shuffles all elements of the array in a random order.

\ **Note:** Like many similar functions in the engine (such as :ref:`@GlobalScope.randi<class_@GlobalScope_method_randi>` or :ref:`pick_random<class_Array_method_pick_random>`), this method uses a common, global random seed. To get a predictable outcome from this method, see :ref:`@GlobalScope.seed<class_@GlobalScope_method_seed>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_size:

.. rst-class:: classref-method

:ref:`int<class_int>` **size**\ (\ ) |const| :ref:`🔗<class_Array_method_size>`

Returns the number of elements in the array. Empty arrays (``[]``) always return ``0``. See also :ref:`is_empty<class_Array_method_is_empty>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_slice:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **slice**\ (\ begin\: :ref:`int<class_int>`, end\: :ref:`int<class_int>` = 2147483647, step\: :ref:`int<class_int>` = 1, deep\: :ref:`bool<class_bool>` = false\ ) |const| :ref:`🔗<class_Array_method_slice>`

Returns a new **Array** containing this array's elements, from index ``begin`` (inclusive) to ``end`` (exclusive), every ``step`` elements.

If either ``begin`` or ``end`` are negative, their value is relative to the end of the array.

If ``step`` is negative, this method iterates through the array in reverse, returning a slice ordered backwards. For this to work, ``begin`` must be greater than ``end``.

If ``deep`` is ``true``, all nested **Array** and :ref:`Dictionary<class_Dictionary>` elements in the slice are duplicated from the original, recursively. See also :ref:`duplicate<class_Array_method_duplicate>`).

::

    var letters = ["A", "B", "C", "D", "E", "F"]
    
    print(letters.slice(0, 2))  # Prints ["A", "B"]
    print(letters.slice(2, -2)) # Prints ["C", "D"]
    print(letters.slice(-2, 6)) # Prints ["E", "F"]
    
    print(letters.slice(0, 6, 2))  # Prints ["A", "C", "E"]
    print(letters.slice(4, 1, -1)) # Prints ["E", "D", "C"]

.. rst-class:: classref-item-separator

----

.. _class_Array_method_sort:

.. rst-class:: classref-method

|void| **sort**\ (\ ) :ref:`🔗<class_Array_method_sort>`

Sorts the array in ascending order. The final order is dependent on the "less than" (``<``) comparison between elements.


.. tabs::

 .. code-tab:: gdscript

    var numbers = [10, 5, 2.5, 8]
    numbers.sort()
    print(numbers) # Prints [2.5, 5, 8, 10]

 .. code-tab:: csharp

    var numbers = new Godot.Collections.Array { 10, 5, 2.5, 8 };
    numbers.Sort();
    GD.Print(numbers); // Prints [2.5, 5, 8, 10]



\ **Note:** The sorting algorithm used is not `stable <https://en.wikipedia.org/wiki/Sorting_algorithm#Stability>`__. This means that equivalent elements (such as ``2`` and ``2.0``) may have their order changed when calling :ref:`sort<class_Array_method_sort>`.

.. rst-class:: classref-item-separator

----

.. _class_Array_method_sort_custom:

.. rst-class:: classref-method

|void| **sort_custom**\ (\ func\: :ref:`Callable<class_Callable>`\ ) :ref:`🔗<class_Array_method_sort_custom>`

Sorts the array using a custom :ref:`Callable<class_Callable>`.

\ ``func`` is called as many times as necessary, receiving two array elements as arguments. The function should return ``true`` if the first element should be moved *before* the second one, otherwise it should return ``false``.

::

    func sort_ascending(a, b):
        if a[1] < b[1]:
            return true
        return false
    
    func _ready():
        var my_items = [["Tomato", 5], ["Apple", 9], ["Rice", 4]]
        my_items.sort_custom(sort_ascending)
        print(my_items) # Prints [["Rice", 4], ["Tomato", 5], ["Apple", 9]]
    
        # Sort descending, using a lambda function.
        my_items.sort_custom(func(a, b): return a[1] > b[1])
        print(my_items) # Prints [["Apple", 9], ["Tomato", 5], ["Rice", 4]]

It may also be necessary to use this method to sort strings by natural order, with :ref:`String.naturalnocasecmp_to<class_String_method_naturalnocasecmp_to>`, as in the following example:

::

    var files = ["newfile1", "newfile2", "newfile10", "newfile11"]
    files.sort_custom(func(a, b): return a.naturalnocasecmp_to(b) < 0)
    print(files) # Prints ["newfile1", "newfile2", "newfile10", "newfile11"]

\ **Note:** In C#, this method is not supported.

\ **Note:** The sorting algorithm used is not `stable <https://en.wikipedia.org/wiki/Sorting_algorithm#Stability>`__. This means that values considered equal may have their order changed when calling this method.

\ **Note:** You should not randomize the return value of ``func``, as the heapsort algorithm expects a consistent result. Randomizing the return value will result in unexpected behavior.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Operator Descriptions
---------------------

.. _class_Array_operator_neq_Array:

.. rst-class:: classref-operator

:ref:`bool<class_bool>` **operator !=**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_neq_Array>`

Returns ``true`` if the array's size or its elements are different than ``right``'s.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_sum_Array:

.. rst-class:: classref-operator

:ref:`Array<class_Array>` **operator +**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_sum_Array>`

Appends the ``right`` array to the left operand, creating a new **Array**. This is also known as an array concatenation.


.. tabs::

 .. code-tab:: gdscript

    var array1 = ["One", 2]
    var array2 = [3, "Four"]
    print(array1 + array2) # Prints ["One", 2, 3, "Four"]

 .. code-tab:: csharp

    // Note that concatenation is not possible with C#'s native Array type.
    var array1 = new Godot.Collections.Array{"One", 2};
    var array2 = new Godot.Collections.Array{3, "Four"};
    GD.Print(array1 + array2); // Prints ["One", 2, 3, "Four"]



\ **Note:** For existing arrays, :ref:`append_array<class_Array_method_append_array>` is much more efficient than concatenation and assignment with the ``+=`` operator.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_lt_Array:

.. rst-class:: classref-operator

:ref:`bool<class_bool>` **operator <**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_lt_Array>`

Compares the elements of both arrays in order, starting from index ``0`` and ending on the last index in common between both arrays. For each pair of elements, returns ``true`` if this array's element is less than ``right``'s, ``false`` if this element is greater. Otherwise, continues to the next pair.

If all searched elements are equal, returns ``true`` if this array's size is less than ``right``'s, otherwise returns ``false``.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_lte_Array:

.. rst-class:: classref-operator

:ref:`bool<class_bool>` **operator <=**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_lte_Array>`

Compares the elements of both arrays in order, starting from index ``0`` and ending on the last index in common between both arrays. For each pair of elements, returns ``true`` if this array's element is less than ``right``'s, ``false`` if this element is greater. Otherwise, continues to the next pair.

If all searched elements are equal, returns ``true`` if this array's size is less or equal to ``right``'s, otherwise returns ``false``.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_eq_Array:

.. rst-class:: classref-operator

:ref:`bool<class_bool>` **operator ==**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_eq_Array>`

Compares the left operand **Array** against the ``right`` **Array**. Returns ``true`` if the sizes and contents of the arrays are equal, ``false`` otherwise.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_gt_Array:

.. rst-class:: classref-operator

:ref:`bool<class_bool>` **operator >**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_gt_Array>`

Compares the elements of both arrays in order, starting from index ``0`` and ending on the last index in common between both arrays. For each pair of elements, returns ``true`` if this array's element is greater than ``right``'s, ``false`` if this element is less. Otherwise, continues to the next pair.

If all searched elements are equal, returns ``true`` if this array's size is greater than ``right``'s, otherwise returns ``false``.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_gte_Array:

.. rst-class:: classref-operator

:ref:`bool<class_bool>` **operator >=**\ (\ right\: :ref:`Array<class_Array>`\ ) :ref:`🔗<class_Array_operator_gte_Array>`

Compares the elements of both arrays in order, starting from index ``0`` and ending on the last index in common between both arrays. For each pair of elements, returns ``true`` if this array's element is greater than ``right``'s, ``false`` if this element is less. Otherwise, continues to the next pair.

If all searched elements are equal, returns ``true`` if this array's size is greater or equal to ``right``'s, otherwise returns ``false``.

.. rst-class:: classref-item-separator

----

.. _class_Array_operator_idx_int:

.. rst-class:: classref-operator

:ref:`Variant<class_Variant>` **operator []**\ (\ index\: :ref:`int<class_int>`\ ) :ref:`🔗<class_Array_operator_idx_int>`

Returns the :ref:`Variant<class_Variant>` element at the specified ``index``. Arrays start at index 0. If ``index`` is greater or equal to ``0``, the element is fetched starting from the beginning of the array. If ``index`` is a negative value, the element is fetched starting from the end. Accessing an array out-of-bounds will cause a run-time error, pausing the project execution if run from the editor.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
.. |void| replace:: :abbr:`void (No return value.)`