| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <unordered_map> |
| |
| // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>, |
| // class Alloc = allocator<pair<const Key, T>>> |
| // class unordered_map |
| |
| // hasher key_eq() const; |
| |
| #include <unordered_map> |
| #include <string> |
| #include <cassert> |
| |
| int main(int, char**) { |
| typedef std::unordered_map<int, std::string> map_type; |
| |
| map_type m; |
| std::pair<map_type::iterator, bool> p1 = m.insert(map_type::value_type(1, "abc")); |
| std::pair<map_type::iterator, bool> p2 = m.insert(map_type::value_type(2, "abc")); |
| |
| const map_type& cm = m; |
| |
| assert(cm.key_eq()(p1.first->first, p1.first->first)); |
| assert(cm.key_eq()(p2.first->first, p2.first->first)); |
| assert(!cm.key_eq()(p1.first->first, p2.first->first)); |
| assert(!cm.key_eq()(p2.first->first, p1.first->first)); |
| |
| return 0; |
| } |