7c00d77e8b
Part of issue #16640. I am leaving this issue open to handle parsing of higher-rank lifetimes in traits. This change breaks code that used unboxed closures: * Instead of `F:|&: int| -> int`, write `F:Fn(int) -> int`. * Instead of `F:|&mut: int| -> int`, write `F:FnMut(int) -> int`. * Instead of `F:|: int| -> int`, write `F:FnOnce(int) -> int`. [breaking-change]
23 lines
705 B
Rust
23 lines
705 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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#![feature(lang_items, overloaded_calls, unboxed_closures)]
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fn c<F:FnOnce(int, int) -> int>(f: F) -> int {
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f(5, 6)
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}
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fn main() {
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let z: int = 7;
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assert_eq!(c(|&: x: int, y| x + y + z), 10);
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//~^ ERROR not implemented
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}
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