How do I compose pipelines with views?

In C++, you can compose pipelines with views using the ranges library, which allows for more readable and efficient code when processing collections. This is achieved by chaining together various views to transform the data as it flows through the pipeline.

Keywords: C++, pipelines, views, ranges, STL, data processing, functional programming
Description: This article explains how to effectively compose pipelines using views in C++ with examples, focusing on the ranges library to enhance code clarity and efficiency.

// Example of composing pipelines with views in C++
#include <iostream>
#include <vector>
#include <ranges>

int main() {
    std::vector nums = {1, 2, 3, 4, 5};

    auto result = nums 
        | std::views::transform([](int n) { return n * n; }) // Square each number
        | std::views::filter([](int n) { return n > 5; });   // Filter numbers greater than 5

    for (int n : result) {
        std::cout << n << ' '; // Outputs: 9 16 25
    }

    return 0;
}
    

Keywords: C++ pipelines views ranges STL data processing functional programming