Trait Apply4Ops
moreops
pub trait Apply4Ops<A1, A2, A3, A4> { fn apply<R, F: FnOnce(A1, A2, A3, A4) -> R>(self, f: F) -> R; }
fn apply<R, F: FnOnce(A1, A2, A3, A4) -> R>(self, f: F) -> R
impl<A1, A2, A3, A4> Apply4Ops<A1, A2, A3, A4> for (A1, A2, A3, A4)