Programming-Idioms

Edit summary for version 23 by zZzZzz:
New Cpp implementation by user [zZzZzz]

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2019-09-26, 14:13:32

2019-09-26, 16:03:08

Idiom #112 Iterate over map entries, ordered by keys

Print each key k with its value x from an associative array mymap, in ascending order of k.

Print each key k with its value x from an associative array mymap, in ascending order of k.

traverse traversal

traverse traversal

#include <iostream>
#include <map>

std::map< K, V > _mymap;
for (const auto& pair : _mymap) {
    std::cout << pair.first << ": " << pair.second << "\n";
}

std::map is a sorted collection that uses std::less by default.

https://en.cppreference.com/w/cpp/container/map

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