demo_remove_if.cc

#include <iostream>
#include <vector>
#include <unordered_set>
#include <string>
#include <algorithm>

const std::unordered_set<std::string> replace_str_set{",", "."};
bool IsReplaceStr(const std::string& str) {
    return (replace_str_set.find(str) != replace_str_set.end());
}

int main() {
    std::vector<std::string> str_vec{"a", ",", "b", ".", "c"};
    std::cout << "before replace: " << std::endl;
    for (auto it = str_vec.begin(); it != str_vec.end(); it++) {
        std::cout << *it << ' ';
    }
    std::cout << std::endl;
    str_vec.erase(std::remove_if(str_vec.begin(), str_vec.end(), IsReplaceStr), str_vec.end());
    std::cout << "after replace: " << std::endl;
    for (auto it = str_vec.begin(); it != str_vec.end(); it++) {
        std::cout << *it << ' ';
    }
    std::cout << std::endl;
    return 0;
}