b53454e2e4
This commit moves reflection (as well as the {:?} format modifier) to a new
libdebug crate, all of which is marked experimental.
This is a breaking change because it now requires the debug crate to be
explicitly linked if the :? format qualifier is used. This means that any code
using this feature will have to add `extern crate debug;` to the top of the
crate. Any code relying on reflection will also need to do this.
Closes #12019
[breaking-change]
26 lines
782 B
Rust
26 lines
782 B
Rust
// Copyright 2012-2014 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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extern crate debug;
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fn iter_vec<T>(v: Vec<T> , f: |&T|) { for x in v.iter() { f(x); } }
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pub fn main() {
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let v = vec!(1, 2, 3, 4, 5, 6, 7);
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let mut odds = 0;
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iter_vec(v, |i| {
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if *i % 2 == 1 {
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odds += 1;
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}
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});
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println!("{:?}", odds);
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assert_eq!(odds, 4);
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}
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