36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
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 w_semi(v: ~[int]) -> int {
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// the semicolon causes compiler not to
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// complain about the ignored return value:
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do v.iter().fold(0) |x,y| { x+*y };
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-10
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}
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fn w_paren1(v: ~[int]) -> int {
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(do v.iter().fold(0) |x,y| { x+*y }) - 10
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}
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fn w_paren2(v: ~[int]) -> int {
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(do v.iter().fold(0) |x,y| { x+*y} - 10)
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}
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fn w_ret(v: ~[int]) -> int {
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return do v.iter().fold(0) |x,y| { x+*y } - 10;
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}
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pub fn main() {
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assert_eq!(w_semi(~[0, 1, 2, 3]), -10);
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assert_eq!(w_paren1(~[0, 1, 2, 3]), -4);
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assert_eq!(w_paren2(~[0, 1, 2, 3]), -4);
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assert_eq!(w_ret(~[0, 1, 2, 3]), -4);
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}
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