Trait std::ops::FnOnce

pub trait FnOnce<Args> {
    type Output;
    extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
}

A version of the call operator that takes a by-value receiver.

Associated Types

type Output

Unstable (fn_traits #29625)

The returned type after the call operator is used.

Required Methods

extern "rust-call" fn call_once(self, args: Args) -> Self::Output

Unstable (fn_traits #29625)

This is called when the call operator is used.

Implementors

• impl<'a, A, F> FnOnce<A> for &'a F where F: Fn<A> + ?Sized
• impl<'a, A, F> FnOnce<A> for &'a mut F where F: FnMut<A> + ?Sized
• impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output=R> + 'a>
• impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output=R> + 'a + Send>
• impl<R, F: FnOnce() -> R> FnOnce<()> for AssertUnwindSafe<F>
• impl<R, F: FnOnce() -> R> FnOnce<()> for AssertRecoverSafe<F>