forEach method
Applies action
to each key/value pair of the map.
Calling action
must not add or remove keys from the map.
final planetsByMass = <num, String>{0.81: 'Venus', 1: 'Earth',
0.11: 'Mars', 17.15: 'Neptune'};
planetsByMass.forEach((key, value) {
print('$key: $value');
// 0.81: Venus
// 1: Earth
// 0.11: Mars
// 17.15: Neptune
});
Implementation
@override
void forEach(void f(K key, V value)) {
origin.forEach(f);
}