28 lines
719 B
Rust
28 lines
719 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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//
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trait Cat {
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fn meow(&self) -> bool;
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fn scratch(&self) -> bool { self.purr() }
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fn purr(&self) -> bool { true }
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}
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impl Cat for isize {
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fn meow(&self) -> bool {
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self.scratch()
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}
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}
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pub fn main() {
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assert!(5.meow());
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}
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