Programming-Idioms

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New Cpp implementation by user [programming-idioms.org]

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2019-08-02, 18:47:28

2019-08-05, 16:37:33

Idiom #13 Iterate over map keys and values

Print each key k with its value x from an associative array mymap

Print each key k with its value x from an associative array mymap

table dictionary hash traverse traversal

table dictionary hash traverse traversal

#include <iostream>

for (const auto& [key, value]: mymap) {
	std::cout << "Key: " << key << " Value: " value << '\n';
}

The [key, value] syntax is a structured binding declaration, since C++17.

'\n' doesn't flush stdout.

https://en.cppreference.com/w/cpp/language/structured_binding

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