Dart Map Keys

Map Keys

Map keys property returns an iterator to the keys in this Map. The type of elements in the returned iterator is as that of the keys in Map.

Syntax

The syntax to get an iterator for the keys of a Map myMap is

myMap.keys

Examples

Get iterator to keys of a Map

In the following Dart Program, we take a Map myMap with three key-value pairs, and get an iterator for the keys using Map.keys property.

main.dart

void main() {
    var myMap = {'apple': 25, 'banana': 10, 'cherry': 6};
    var keysIterator = myMap.keys;
    print(keysIterator.elementAt(0));
    print(keysIterator.elementAt(1));
    print(keysIterator.elementAt(2));
}

Output

apple
banana
cherry

Conclusion

In this Dart Tutorial, we learned how to get an iterator for the keys of a Map, using Map.keys property.