30 lines
975 B
Rust
30 lines
975 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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trait repeat<A> { fn get() -> A; }
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impl<A:Copy> @A: repeat<A> {
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fn get() -> A { *self }
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}
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fn repeater<A:Copy>(v: @A) -> repeat<A> {
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// Note: owned kind is not necessary as A appears in the trait type
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v as repeat::<A> // No
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}
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fn main() {
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// Here, an error results as the type of y is inferred to
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// repeater<</3> where lt is the block.
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let y = {
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let x: &blk/int = &3; //~ ERROR cannot infer an appropriate lifetime
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repeater(@x)
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};
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assert 3 == *(y.get());
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} |