33 lines
1001 B
Rust
33 lines
1001 B
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Tests that the reexports of `FnOnce` et al from the prelude work.
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// pretty-expanded FIXME #23616
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#![allow(unknown_features)]
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#![feature(box_syntax)]
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#![feature(unboxed_closures, core)]
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fn main() {
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// FIXME (#22405): Replace `Box::new` with `box` here when/if possible.
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let task: Box<Fn(isize) -> isize> = Box::new(|x| x);
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task.call((0, ));
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let mut task: Box<FnMut(isize) -> isize> = Box::new(|x| x);
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task(0);
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call(|x| x, 22);
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}
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fn call<F:FnOnce(isize) -> isize>(f: F, x: isize) -> isize {
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f(x)
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}
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