36 lines
830 B
Rust
36 lines
830 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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trait TheTrait : TheSuperTrait<<Self as TheTrait>::Item> {
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type Item;
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}
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trait TheSuperTrait<T> {
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fn get(&self) -> T;
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}
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impl TheTrait for i32 {
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type Item = u32;
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}
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impl TheSuperTrait<u32> for i32 {
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fn get(&self) -> u32 {
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*self as u32
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}
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}
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fn foo<T:TheTrait<Item=u32>>(t: &T) -> u32 {
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t.get()
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}
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fn main() {
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foo::<i32>(&22);
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}
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