# SplayTreeMap<K, V>.from constructor

SplayTreeMap<K, V>.from(Map other, [ int compare(K key1, K key2), bool isValidKey(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 other,
        [int compare(K key1, K key2), bool isValidKey(potentialKey)]) {
      SplayTreeMap<K, V> result = new SplayTreeMap<K, V>(compare, isValidKey);
      other.forEach((k, v) {
        result[k] = v;
      });
      return result;
    }