addAll method

Adds all key-value pairs of [other] to this map.

void addAll(
Map<K,V> other
)

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.