Removing duplicates in a vector of strings.

Removing_duplicates_in_vector_of_strings.hpp

// Online C++ compiler to run C++ program online
#include <iostream>
#include <string>
#include <vector>
#include <set>
using namespace std;
class QueueHandler{
   public:
    QueueHandler(vector<string> coming){
        _in=coming;
    }
    vector<string> removeReplicated(void){
        vector<string> out;
        
        set<string> const uniques(_in.begin(), _in.end());
        _in.assign(uniques.begin(), uniques.end());
        
        out=_in;
        return out;
    }
    private:
    vector<string> _in;   
    
};

int main() {
    vector<string> sample_before =
    {"ahmed", "yahia","tamer","yahia","ahmed","abdo"};
    for(auto &it : sample_before){
    cout << it+"\n";     
    }
      cout << "--------------\n";    
    QueueHandler qu_handle{sample_before};
    auto sample_after = qu_handle.removeReplicated();
    for(auto &it : sample_after){
    cout << it+"\n";     
    }
   

    return 0;
}