description

# HashMap<K, V>.fromIterables constructor

HashMap<K, V>.fromIterables(

1. Iterable<K> keys,
2. 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. Example:

    final keys = ['Mercury', 'Venus', 'Earth', 'Mars'];
    final values = [0.06, 0.81, 1, 0.11];
    final mapFromIterables = HashMap.fromIterables(keys, values);
    print(mapFromIterables);
    // {Earth: 1, Mercury: 0.06, Mars: 0.11, Venus: 0.81}

## Implementation

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