d223dd1e57
This patch merges IterBytes and Hash traits, which clears up the confusion of using `#[deriving(IterBytes)]` to support hashing. Instead, it now is much easier to use the new `#[deriving(Hash)]` for making a type hashable with a stream hash. Furthermore, it supports custom non-stream-based hashers, such as if a value's hash was cached in a database. This does not yet replace the old IterBytes-hash with this new version.
28 lines
880 B
Rust
28 lines
880 B
Rust
// Copyright 2014 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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// ignore-fast
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use std::hash;
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use std::hash::Hash;
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#[deriving(Hash)]
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struct Person {
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id: uint,
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name: ~str,
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phone: uint,
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}
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fn main() {
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let person1 = Person { id: 5, name: ~"Janet", phone: 555_666_7777 };
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let person2 = Person { id: 5, name: ~"Bob", phone: 555_666_7777 };
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assert!(hash::hash(&person1) == hash::hash(&person1));
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assert!(hash::hash(&person1) != hash::hash(&person2));
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}
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