我需要从一个字符串向量中删除包含特定单词的字符串。
我该如何编写 remove_if
的一元谓词?
以下是代码示例:
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
bool remove_if_found(string word)
{
// ???
}
int main()
{
vector<string> data {
{ "the guitar has six strings" },
{ "the violin has four strings" },
{ "the the violin is more difficult to learn" },
{ "saxophones are a family of instruments" },
{ "the drum is a set of percussions" },
{ "the trumpet is a brass" }
};
cout << data.size() << endl; // output: 6
remove_if(data.begin(), data.end(), remove_if_found("violin")); // error
cout << data.size() << endl; // output should be: 4
return 0;
}