demo1源码：
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;struct PushStreamIpAndPort
{std::string ip="";int port=0;// 重载相等运算符 == ：可不用bool operator==(const PushStreamIpAndPort &other) {return this->port == other.port && this->ip == other.ip;}PushStreamIpAndPort() {}// 重载构造函数去快速赋值：可不用PushStreamIpAndPort(const std::string t_ip, const int t_port) {ip = t_ip;port = t_port;}
};int main() {PushStreamIpAndPort a;PushStreamIpAndPort b;a.ip = "127.0.0.1";a.port = 10000;b.ip = "127.0.0.1";b.port = 10000;PushStreamIpAndPort c = PushStreamIpAndPort("127.0.0.1", 10001);vector<PushStreamIpAndPort> v;v.push_back(a);v.push_back(b);// if(a==b){
// cout<<"相等"<<endl;
// }else{
// cout<<"不相等"<<endl;
// }auto it = std::find(v.begin(), v.end(), c);if(it != v.end()){cout<<"在内部"<<endl;}else{cout<<"不在内部"<<endl;}return 0;
}
demo2源码：自动排除相同值
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;struct PushStreamIpAndPort
{std::string ip="";int port=0;// 重载相等运算符 ==bool operator==(const PushStreamIpAndPort &other) {return this->port == other.port && this->ip == other.ip;}PushStreamIpAndPort() {}PushStreamIpAndPort(const std::string t_ip, const int t_port) {ip = t_ip;port = t_port;}
};int main() {PushStreamIpAndPort a("127.0.0.1", 10000);PushStreamIpAndPort b("127.0.0.1", 10000);PushStreamIpAndPort c("127.0.0.1", 10001);vector<PushStreamIpAndPort> v;// 检查要添加的元素是否已经存在于 vector 中if (find(v.begin(), v.end(), a) == v.end()) {v.push_back(a);}if (find(v.begin(), v.end(), b) == v.end()) {v.push_back(b);}if (find(v.begin(), v.end(), c) == v.end()) {v.push_back(c);}for (const auto &elem : v) {cout << "IP: " << elem.ip << ", Port: " << elem.port << endl;}return 0;
}
