description

# SplayTreeMap<K, V>.fromIterables constructor Null safety

SplayTreeMap<K, V>.fromIterables(

1. Iterable<K> keys,
2. Iterable<V> values,
3. [int compare(
   1. K key1,
   2. K key2
   ),
4. bool isValidKey(
   1. dynamic potentialKey
   )]

)

Creates a SplayTreeMap 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 SplayTreeMap.fromIterables(Iterable<K> keys, Iterable<V> values,
        [int Function(K key1, K key2)? compare,
        bool Function(dynamic potentialKey)? isValidKey]) {
      SplayTreeMap<K, V> map = SplayTreeMap<K, V>(compare, isValidKey);
      MapBase._fillMapWithIterables(map, keys, values);
      return map;
    }