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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::fmt;
struct Thingy {
x: isize,
y: isize
}
impl fmt::Debug for Thingy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{{ x: {:?}, y: {:?} }}", self.x, self.y)
}
}
struct PolymorphicThingy<T> {
x: T
}
impl<T:fmt::Debug> fmt::Debug for PolymorphicThingy<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:?}", self.x)
}
}
pub fn main() {
println!("{:?}", Thingy { x: 1, y: 2 });
println!("{:?}", PolymorphicThingy { x: Thingy { x: 1, y: 2 } });
}
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