C ++函数std::unordered_multimap::operator =()通过替换旧内容,将新内容分配给unordered_multimap,并在必要时修改大小。
以下是std::unordered_map()标头中的std::unordered_multimap::operator =()函数的声明。
unordered_multimap& operator=(const unordered_multimap& umm);
umm - Another unordered_multimap object of same type.
Returns this pointer.
#include <iostream> #include <unordered_map> using namespace std; int main(void) { unordered_multimap umm1 = { {'a', 1}, {'b', 2}, {'c', 3}, {'d', 4}, {'e', 5}, }; unordered_multimap umm2; umm2 = umm1; cout << "Unordered multimap contains following elements" << endl; for (auto it = umm2.begin(); it != umm2.end(); ++it) cout << it->first << " = " << it->second << endl; return 0; }
输出结果
Unordered multimap contains following elements e = 5 a = 1 b = 2 c = 3 d = 4