Type Alias CFArrayCopyDescriptionCallBack 

pub type CFArrayCopyDescriptionCallBack = Option<unsafe extern "C-unwind" fn(*const c_void) -> *const CFString>;

Available on crate feature CFArray only.

Apple’s documentation

Aliased Type

pub enum CFArrayCopyDescriptionCallBack {
    None,
    Some(unsafe extern "C-unwind" fn(*const c_void) -> *const CFString),
}

Variants

None

No value.

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

Some value of type T.