34 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <unordered_map>10 11// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,12// class Alloc = allocator<pair<const Key, T>>>13// class unordered_multimap14 15// hasher hash_function() const;16 17#include <unordered_map>18#include <string>19#include <cassert>20 21int main(int, char**) {22 typedef std::unordered_multimap<int, std::string> map_type;23 map_type m;24 25 map_type::iterator i1 = m.insert(map_type::value_type(1, "abc"));26 map_type::iterator i2 = m.insert(map_type::value_type(1, "bcd"));27 28 const map_type& cm = m;29 assert(cm.hash_function()(i1->first) == cm.hash_function()(i2->first));30 assert(cm.hash_function()(i2->first) == cm.hash_function()(i1->first));31 32 return 0;33}34