firstKeyAfter method Null safety
- K key
Get the first key in the map that is strictly larger than key. Returns
null if no key was not found.
Implementation
K? firstKeyAfter(K key) {
if (key == null) throw ArgumentError(key);
if (_root == null) return null;
int comp = _splay(key);
if (comp > 0) return _root!.key;
_SplayTreeMapNode<K, V>? node = _root!.right;
if (node == null) return null;
var nodeLeft = node.left;
while (nodeLeft != null) {
node = nodeLeft;
nodeLeft = node.left;
}
return node!.key;
}