# addAll method

1. @override

void addAll(

1. Map<K, V> other

)
override

Adds all key/value pairs of `other` to this map.

If a key of `other` is already in this map, its value is overwritten.

The operation is equivalent to doing `this[key] = value` for each key and associated value in other. It iterates over `other`, which must therefore not change during the iteration.

    final planets = <int, String>{1: 'Mercury', 2: 'Earth'};
    planets.addAll({5: 'Jupiter', 6: 'Saturn'});
    print(planets); // {1: Mercury, 2: Earth, 5: Jupiter, 6: Saturn}

## Implementation

    @override
    void addAll(Map<K, V> other) {
      other.forEach((key, value) {
        this[key] = value;
      });
    }