C++: merge

개요

• 다른 컨테이너의 노드를 연결

예제

• 코드

    #include <iostream>
    #include <map>
    #include <string>

    using namespace std;

    int main() {
    	map<int, string> m1{{1, "a"}, {2, "b"}, {3, "c"}};
    	map<int, string> m2{{4, "d"}, {5, "e"}, {6, "f"}};

    	for (const auto &iter : m1) {
    		cout << iter.first << ", " << iter.second << endl;
    	}

    	cout << "------ 1" << endl;

    	for (const auto &iter : m2) {
    		cout << iter.first << ", " << iter.second << endl;
    	}

    	cout << "------ 2" << endl;

    	m1.merge(m2);

    	for (const auto &iter : m1) {
    		cout << iter.first << ", " << iter.second << endl;
    	}

    	cout << "------ 3" << endl;

    	for (const auto &iter : m2) {
    		cout << iter.first << ", " << iter.second << endl;
    	}

    	cout << "------ 4" << endl;

    	return 0;
    }

• 실행 결과

    1, a
    2, b
    3, c
    ------ 1
    4, d
    5, e
    6, f
    ------ 2
    1, a
    2, b
    3, c
    4, d
    5, e
    6, f
    ------ 3
    ------ 4