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]
30 lines
857 B
Rust
30 lines
857 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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extern crate debug;
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enum clam<T> { a(T, int), b, }
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fn uhoh<T>(v: Vec<clam<T>> ) {
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match *v.get(1) {
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a::<T>(ref _t, ref u) => {
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println!("incorrect");
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println!("{:?}", u);
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fail!();
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}
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b::<T> => { println!("correct"); }
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}
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}
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pub fn main() {
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let v: Vec<clam<int>> = vec!(b::<int>, b::<int>, a::<int>(42, 17));
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uhoh::<int>(v);
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}
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