| 1234567891011121314151617181920212223 | package validationimport (	"regexp"	validator "github.com/go-playground/validator/v10")// CheckYesOrNo - checks if a field on a struct is yes or nofunc CheckYesOrNo(fl validator.FieldLevel) bool {	return fl.Field().String() == "yes" || fl.Field().String() == "no"}// CheckYesOrNoOrUnset - checks if a field is yes, no or unsetfunc CheckYesOrNoOrUnset(fl validator.FieldLevel) bool {	return CheckYesOrNo(fl) || fl.Field().String() == "unset"}// CheckRegex - check if a struct's field passes regex testfunc CheckRegex(fl validator.FieldLevel) bool {	re := regexp.MustCompile(fl.Param())	return re.MatchString(fl.Field().String())}
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