25 lines
737 B
Rust
25 lines
737 B
Rust
// Copyright 2012 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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fn to_lambda(f: @fn(uint) -> uint) -> @fn(uint) -> uint {
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return f;
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}
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pub fn main() {
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let x: @fn(uint) -> uint = to_lambda(|x| x * 2u );
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let y = to_lambda(x);
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let x_r = x(22u);
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let y_r = y(x_r);
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assert!(x_r == 44u);
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assert!(y_r == 88u);
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}
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