38 lines
1019 B
Rust
38 lines
1019 B
Rust
// Copyright 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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use std::fmt;
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struct Thingy {
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x: isize,
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y: isize
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}
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impl fmt::Debug for Thingy {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{{ x: {:?}, y: {:?} }}", self.x, self.y)
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}
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}
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struct PolymorphicThingy<T> {
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x: T
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}
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impl<T:fmt::Debug> fmt::Debug for PolymorphicThingy<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{:?}", self.x)
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}
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}
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pub fn main() {
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println!("{:?}", Thingy { x: 1, y: 2 });
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println!("{:?}", PolymorphicThingy { x: Thingy { x: 1, y: 2 } });
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}
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