Creating implementation for idiom 332 : List of the keys of a map

Idiom

# 332 List of the keys of a map

Created by

Lead paragraph

Create the list k containing all the keys of the map m

New implementation

Language

Imports

Code

Documentation URL

Original attribution URL

Online runnable demo

Username

Be concise.

Be useful.

All contributions dictatorially edited by webmasters to match personal tastes.

Please do not paste any copyright violating material.

Please try to avoid dependencies to third-party libraries and frameworks.

Other implementations

final k = m.keys;

import "golang.org/x/exp/maps"

k := maps.Keys(m)

k := make([]K, 0, len(m))
for key := range m {
	k = append(k, key)
}

import java.util.ArrayList;
import java.util.List;

List<K> k = new ArrayList<>(m.keySet());

import static java.util.List.copyOf;
import java.util.List;

List<K> k = copyOf(m.keySet());

@k = keys %m;

k = m.keys()

k = [*m.keys()]

k = list(m.keys())

k = m.keys

use std::collections::HashMap;

m.keys().collect::<Vec<_>>()