Type Alias CFSetHashCallBack 

pub type CFSetHashCallBack = Option<unsafe extern "C" fn(value: *const c_void) -> CFHashCode>;

Aliased Type

pub enum CFSetHashCallBack {
    None,
    Some(unsafe extern "C" fn(*const c_void) -> u64),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const c_void) -> u64)

Some value of type T.