scope_lock

Function extend_fn_once_unchecked

Source 
pub unsafe fn extend_fn_once_unchecked<'a, F, I, O>(
    f: F,
) -> impl FnOnce(I) -> O + 'a
where
    F: PointerIntoInner,
    F::Pointee: FnOnce(I) -> O,
    I: 'a,
    O: 'a,