https://www.toptal.com/c/after-all-these-years-the-world-is-still-powered-by-c-programming

Structured Bindings in C++17: Unpacking Data with Elegance

Introducion

C++17 introduced structured bindings, a powerful feature that allows developers to unpack elements from structured objects into individual variables with a single, concise declaration. This feature significantly enhances code readability and reduces verbosity, making C++ more expressive and easier to work with.

Basic Syntax

The basic syntax for structured bindings is:

auto [variable1, variable2, ...] = expression;

Here’s what each part means:

• auto: Automatically deduces the types of the variables.
• [variable1, variable2, ...]: Declares a list of variables to be bound.
• expression: Any expression that evaluates to a structured object (e.g., tuple, struct, array).

Examples with Different Types

Let’s explore how structured bindings work with various types:

1. Tuples

#include <iostream>
#include <tuple>

int main() {
    std::tuple<int, double, std::string> myTuple = {42, 3.14, "Hello"};

    // Using structured bindings
    auto [a, b, c] = myTuple;

    std::cout << a << " " << b << " " << c << std::endl;
    // Output: 42…