21 lines
662 B
Rust
21 lines
662 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 add(x: proc(f64) -> f64) -> f64 {
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x(10.0)
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}
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pub fn main() {
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// Trailing expressions don't require parentheses:
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let y = do add |x| { x + 10.0 } + 10.0;
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assert_eq!(y, 30.0);
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}
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