description

# SplayTreeMap<K, V>.from constructor

SplayTreeMap<K, V>.from(

1. Map<Object?, Object?> other, [
2. int compare(
   1. K key1,
   2. K key2
   )?,
3. bool isValidKey(
   1. dynamic
   )?

])

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. Example:

    final baseMap = <int, Object>{3: 'C', 1: 'A', 2: 'B'};
    final fromBaseMap = SplayTreeMap<int, String>.from(baseMap);
    print(fromBaseMap); // {1: A, 2: B, 3: C}

## Implementation

    factory SplayTreeMap.from(
      Map<Object?, Object?> 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;
    }