Struct CFSetCallBacks 

#[repr(C)]
pub struct CFSetCallBacks {
    pub version: CFIndex,
    pub retain: CFSetRetainCallBack,
    pub release: CFSetReleaseCallBack,
    pub copyDescription: CFSetCopyDescriptionCallBack,
    pub equal: CFSetEqualCallBack,
    pub hash: CFSetHashCallBack,
}

Available on crate feature CFSet only.

Structure containing the callbacks of a CFSet. Field: version The version number of the structure type being passed in as a parameter to the CFSet creation functions. This structure is version 0. Field: retain The callback used to add a retain for the set on values as they are put into the set. This callback returns the value to store in the set, which is usually the value parameter passed to this callback, but may be a different value if a different value should be stored in the set. The set’s allocator is passed as the first argument. Field: release The callback used to remove a retain previously added for the set from values as they are removed from the set. The set’s allocator is passed as the first argument. Field: copyDescription The callback used to create a descriptive string representation of each value in the set. This is used by the CFCopyDescription() function. Field: equal The callback used to compare values in the set for equality for some operations. Field: hash The callback used to compare values in the set for uniqueness for some operations.

See also Apple’s documentation

Fields

version: CFIndex

retain: CFSetRetainCallBack

release: CFSetReleaseCallBack

copyDescription: CFSetCopyDescriptionCallBack

equal: CFSetEqualCallBack

hash: CFSetHashCallBack

Trait Implementations

impl Clone for CFSetCallBacks

fn clone(&self) -> CFSetCallBacks

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CFSetCallBacks

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Encode for CFSetCallBacks

Available on crate feature objc2 only.

const ENCODING: Encoding

The Objective-C type-encoding for this type.

impl PartialEq for CFSetCallBacks

fn eq(&self, other: &CFSetCallBacks) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for CFSetCallBacks

Available on crate feature objc2 only.

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for CFSetCallBacks

impl StructuralPartialEq for CFSetCallBacks