27 lines
772 B
Rust
27 lines
772 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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// xfail-test
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type IMap<K:Copy,V:Copy> = ~[(K, V)];
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trait ImmutableMap<K:Copy,V:Copy>
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{
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fn contains_key(key: K) -> bool;
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}
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impl<K:Copy,V:Copy> IMap<K, V> : ImmutableMap<K, V>
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{
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fn contains_key(key: K) -> bool {
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vec::find(self, |e| {e.first() == key}).is_some()
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}
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}
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pub fn main() {}
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