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]
22 lines
740 B
Rust
22 lines
740 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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struct Pair<T, U> { a: T, b: U }
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struct Triple { x: int, y: int, z: int }
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fn f<T,U>(x: T, y: U) -> Pair<T, U> { return Pair {a: x, b: y}; }
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pub fn main() {
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println!("{:?}", f(Triple {x: 3, y: 4, z: 5}, 4).a.x);
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println!("{:?}", f(5, 6).a);
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}
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