26 lines
777 B
Rust
26 lines
777 B
Rust
// Copyright 2015 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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#![feature(default_type_parameter_fallback)]
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// An example from the RFC
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trait Foo { fn takes_foo(&self); }
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trait Bar { }
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impl<T:Bar=usize> Foo for Vec<T> {
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fn takes_foo(&self) {}
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}
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impl Bar for usize {}
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fn main() {
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let x = Vec::new(); // x: Vec<$0>
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x.takes_foo(); // adds oblig Vec<$0> : Foo
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}
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