Similar splice in C++ like the splice in Javascript? - c++

Question

is there a similar method/function in C++ like the splice in Javascript?
Example from W3School:
var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.splice(2,1,"Lemon","Kiwi");
The result of fruits will be:
Banana,Orange,Lemon,Kiwi,Mango
I wan't to be able to do the same thing in C++. I have created an array of boxes that should dissapear one by one when I click on them. I don't know how to do it, please help.
PS. I'm using the SDL library and Microsoft Visual C++ 2010 Express.

Answer 1

If you're using a vector, you have access to the insert method:
#include <vector>
#include <iostream>
#include <string>
int main()
{
std::vector<std::string> fruits = {"Banana", "Orange", "Apple", "Mango"};
auto pos = fruits.begin() + 2;
fruits.insert(pos, {"Lemon", "Kiwi"});
for (auto fruit : fruits) std::cout << fruit << " ";
}
Output: Banana Orange Lemon Kiwi Apple Mango
Here is a Demo.

Answer 2

In C++11:
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
template<typename T>
vector<T> splice(vector<T>& v, int start, int howmuch, const vector<T>& ar) {
vector<T> result(begin(v) + start, begin(v) + start + howmuch);
v.erase(begin(v) + start, begin(v) + start + howmuch);
v.insert(begin(v) + start, begin(ar), end(ar));
return result;
}
int main() {
vector<string> fruits = {"Banana", "Orange", "Apple", "Mango"};
auto v = splice(fruits, 2, 1, {"Lemon", "Kiwi"});
cout << "Returned value: " << endl;
for (auto &s: v) {
cout << "\t" << s << endl;
}
cout << endl;
cout << "fruits: " << endl;
for (auto &s: fruits) {
cout << "\t" << s << endl;
}
}
Produces the output:
Returned value:
Apple
fruits:
Banana
Orange
Lemon
Kiwi
Mango
It's a templated version so it should work not only with strings;
Function behaves the same as JS version but you have to pass your vector as the first parameter here.