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-exception
6//
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_multimap
14
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(x: map_type::value_type(1, "abc"));
26 map_type::iterator i2 = m.insert(x: 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

source code of libcxx/test/std/containers/unord/unord.multimap/hash_function.pass.cpp