Container initialisieren mit std::iota – Modernes C++

Motivation

Revisiting my C++ skills after nearly 14 years of abstinence I came across I nice little function called iota.
It is part of the <numeric> header and is used to fill a container with a sequence of numbers.
The function is overloaded for different types of containers and different types of numbers.
The following example shows how to use it with a std::vector<int> and a std::int32_t as start value.

Code

#include <iostream>
#include <vector>
#include <numeric>

int main() {
    std::vector<int> numbers(5);
    std::int32_t startValue = 10;

    std::iota(numbers.begin(), numbers.end(), startValue);

    for (int num : numbers) {
        std::cout << num << " ";
    }
    std::cout << std::endl;

    return 0;
}