class_weakref.rst 1.6 KB

123456789101112131415161718192021222324252627282930313233343536373839
  1. .. Generated automatically by doc/tools/makerst.py in Godot's source tree.
  2. .. DO NOT EDIT THIS FILE, but the doc/base/classes.xml source instead.
  3. .. _class_WeakRef:
  4. WeakRef
  5. =======
  6. **Inherits:** :ref:`Reference<class_reference>` **<** :ref:`Object<class_object>`
  7. **Category:** Core
  8. Brief Description
  9. -----------------
  10. Holds an :ref:`Object<class_object>`, but does not contribute to the reference count if the object is a reference.
  11. Member Functions
  12. ----------------
  13. +------------------------------+----------------------------------------------------------+
  14. | :ref:`Object<class_object>` | :ref:`get_ref<class_WeakRef_get_ref>` **(** **)** const |
  15. +------------------------------+----------------------------------------------------------+
  16. Description
  17. -----------
  18. A weakref can hold a :ref:`Reference<class_reference>`, without contributing to the reference counter. A weakref can be created from an :ref:`Object<class_object>` using :ref:`@GDScript.weakref<class_@GDScript_weakref>`. If this object is not a reference, weakref still works, however, it does not have any effect on the object. Weakrefs are useful in cases where multiple classes have variables that refer to eachother. Without weakrefs, using these classes could lead to memory leaks, since both references keep eachother from being released. Making part of the variables a weakref can prevent this cyclic dependency, and allows the references to be released.
  19. Member Function Description
  20. ---------------------------
  21. .. _class_WeakRef_get_ref:
  22. - :ref:`Object<class_object>` **get_ref** **(** **)** const
  23. Returns the :ref:`Object<class_object>` this weakref is referring to.