37 lines
829 B
Rust
37 lines
829 B
Rust
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// 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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// Test that you can supply `&F` where `F: Fn()`.
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#![feature(lang_items, unboxed_closures)]
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fn a<F:Fn() -> i32>(f: F) -> i32 {
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f()
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}
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fn b(f: &Fn() -> i32) -> i32 {
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a(f)
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}
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fn c<F:Fn() -> i32>(f: &F) -> i32 {
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a(f)
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}
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fn main() {
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let z: isize = 7;
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let x = b(&|| 22);
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assert_eq!(x, 22);
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let x = c(&|| 22);
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assert_eq!(x, 22);
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}
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