Type Alias WriteBytesFDF 

pub type WriteBytesFDF = Option<unsafe extern "C-unwind" fn(NonNull<c_void>, u8, i64, NonNull<u32>, NonNull<c_void>) -> i32>;

Apple’s documentation

Aliased Type

pub enum WriteBytesFDF {
    None,
    Some(unsafe extern "C-unwind" fn(NonNull<c_void>, u8, i64, NonNull<u32>, NonNull<c_void>) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C-unwind" fn(NonNull<c_void>, u8, i64, NonNull<u32>, NonNull<c_void>) -> i32)

Some value of type T.