31 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// <map>10 11// value_compare value_comp() const;12 13#include <map>14#include <cassert>15#include <string>16 17int main(int, char**) {18 typedef std::map<int, std::string> map_type;19 20 map_type m;21 std::pair<map_type::iterator, bool> p1 = m.insert(map_type::value_type(1, "abc"));22 std::pair<map_type::iterator, bool> p2 = m.insert(map_type::value_type(2, "abc"));23 24 const map_type& cm = m;25 26 assert(cm.value_comp()(*p1.first, *p2.first));27 assert(!cm.value_comp()(*p2.first, *p1.first));28 29 return 0;30}31