linux C++获取两个std::set容器差异（容器元素差异）（容器元素差别）std::set_differencestd::inserter

Posted 2023-03-03 Dontla

示例：
（set_difference.cpp）

#include <iostream>
#include <set>
#include <algorithm>
#include <string>

int main()

    std::set<std::string> inCameraIdDroppedSet = "camera1", "camera2", "camera3", "camera4", "camera5";
    std::set<std::string> remainCameraIdDroppedSet = "camera2", "camera4", "camera6", "camera8", "camera10";
    std::set<std::string> diffSet;

    std::set_difference(inCameraIdDroppedSet.begin(), inCameraIdDroppedSet.end(),
                        remainCameraIdDroppedSet.begin(), remainCameraIdDroppedSet.end(),
                        std::inserter(diffSet, diffSet.begin()));

    std::cout << "The difference between the two sets is: ";
    for (const auto &x : diffSet)
    
        std::cout << x << " ";
    
    std::cout << std::endl;
    return 0;

编译运行结果：