13e80af159
a default impl should never be considered as implementing the trait on its own -- regardless of whether it contains all items or not
34 lines
857 B
Rust
34 lines
857 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(specialization)]
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trait Foo {
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fn foo_one(&self) -> &'static str;
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fn foo_two(&self) -> &'static str;
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}
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struct MyStruct;
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default impl<T> Foo for T {
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fn foo_one(&self) -> &'static str {
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"generic"
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}
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}
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impl Foo for MyStruct {
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fn foo_two(&self) -> &'static str {
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self.foo_one()
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}
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}
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fn main() {
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assert!(MyStruct.foo_two() == "generic");
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} |