# HashMap<K, V>.fromIterables constructor

HashMap<K, V>.fromIterables(Iterable<K> keys, Iterable<V> values)

Creates a HashMap associating the given `keys` to `values`.

This constructor iterates over `keys` and `values` and maps each element of `keys` to the corresponding element of `values`.

If `keys` contains the same object multiple times, the last occurrence overwrites the previous value.

It is an error if the two Iterables don't have the same length.

## Implementation

    factory HashMap.fromIterables(Iterable<K> keys, Iterable<V> values) {
      Map<K, V> map = new HashMap<K, V>();
      MapBase._fillMapWithIterables(map, keys, values);
      return map;
    }