// Copyright 2014 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. use std::hash::{Hash, SipHasher}; #[derive(Hash)] struct Person { id: uint, name: String, phone: uint, } fn hash(t: &T) -> u64 { std::hash::hash::(t) } fn main() { let person1 = Person { id: 5, name: "Janet".to_string(), phone: 555_666_7777 }; let person2 = Person { id: 5, name: "Bob".to_string(), phone: 555_666_7777 }; assert!(hash(&person1) == hash(&person1)); assert!(hash(&person1) != hash(&person2)); }