concat std :: vector和初始化列表

Question

In c++11 you can do this wonderful syntax:

vector<int> numbers = {1, 2, 3};

Is there a way to concatenate a further initializer list onto an existing vector?

numbers.??? ({4, 5, 6});

or

std::??? (numbers, {4, 5, 6});

Answer 1

You can use std::vector::insert for that:

#include <vector>

vector<int> numbers = {1, 2, 3};
numbers.insert( numbers.end(), {4, 5, 6} );

Answer 2

使用std::vector::insert ：

numbers.insert(numbers.end(), {4, 5, 6});

Answer 3

You can use std::vector::insert . Link to example code

#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<int> a = {1,2,3};
    a.insert(a.end(), {4,5,6});
    for(int &i : a) {
        cout << i << " ";
    }
    cout << endl;
    return 0;
}