Type Alias

CFBagHashCallBack

Prototype of a callback function invoked to compute a hash code for a value. Hash codes are used when values are accessed, added, or removed from a collection.

Declaration

typedef CFHashCode (*CFBagHashCallBack)(const void *value);

Parameters

value

The value used to compute the hash code.

Return Value

An integer that can be used as a table address in a hash table structure.

Discussion

This callback is passed to CFBagCreate in a CFBagCallBacks structure.

See Also

Callbacks

CFBagApplierFunction

Prototype of a callback function that may be applied to every value in a bag.

CFBagCopyDescriptionCallBack

Prototype of a callback function used to get a description of a value in a bag.

CFBagEqualCallBack

Prototype of a callback function used to determine if two values in a bag are equal.

CFBagReleaseCallBack

Prototype of a callback function used to release a value before it’s removed from a bag.

CFBagRetainCallBack

Prototype of a callback function used to retain a value being added to a bag.