description

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

SplayTreeMap<K, V>.from(

1. Map other,
2. [int compare(
   1. K key1,
   2. K key2
   ),
3. bool isValidKey(
   1. dynamic potentialKey
   )]

)

Creates a SplayTreeMap that contains all key/value pairs of `other`.

The keys must all be instances of `K` and the values of `V`. The `other` map itself can have any type.

## Implementation

    factory SplayTreeMap.from(Map<dynamic, dynamic> other,
        [int Function(K key1, K key2)? compare,
        bool Function(dynamic potentialKey)? isValidKey]) {
      if (other is Map<K, V>) {
        return SplayTreeMap<K, V>.of(other, compare, isValidKey);
      }
      SplayTreeMap<K, V> result = SplayTreeMap<K, V>(compare, isValidKey);
      other.forEach((dynamic k, dynamic v) {
        result[k] = v;
      });
      return result;
    }