description

# addAll method Null safety

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.

## Implementation

    void addAll(Map<K, V> other) {
      for (K key in other.keys) {
        this[key] = other[key] as V;
      }
    }