public function clear($index) { return $index < $this->left->getSize() ? $this->left->clear($index) : $this->right->clear($index - $this->right->getSize()); }
public function clear($index, $source = null) { return $index < $this->left->getSize() ? $this->left->clear($index, $source) : $this->right->clear($index - $this->right->getSize(), $source); }