In C++, std::initializer_list is a standard library feature introduced in C++11, which provides a convenient way to initialize a std::initializer_list object with a list of elements.

Basic Usage

To use std::initializer_list, you need to include the <initializer_list> header.

#include <initializer_list>

Then, you can use it to define a function that takes an initializer_list parameter:

void process(std::initializer_list<int> list) {
    for (int value : list) {
        // Process each value
    }
}

Example

Here’s an example of how you can use std::initializer_list to initialize a list of integers:

process({1, 2, 3, 4, 5});

Benefits

Using std::initializer_list allows you to pass an arbitrary number of arguments to a function in a concise and readable manner.

Conclusion

std::initializer_list is a powerful feature in C++ that simplifies the initialization of lists and arrays. It is particularly useful when working with functions that need to accept a variable number of arguments.

For more detailed information, please refer to the C++ documentation.