Print Tree Dart: Loop vs No-Loop Implementation (`¯\_(ツ)_/¯`)

main.dart

class Node {
  final String text;
  final List<Node> nodes;
  
  Node({this.text, this.nodes = const []});
  
  static void _printNodeLoop(Node node, [String space = '']) {
    print('$space${node.text}');
    node.nodes.forEach((n) => _printNodeLoop(n, '${space}__'));
  }
  
  static void _printNodesNoLoop(List<Node> nodes, [String space = '']) {
    var tail = <Node>[];
    
    if (nodes.isNotEmpty) {
      tail = [...nodes];
      final head = tail.removeAt(0);
      print('$space${head.text}');
      
      _printNodesNoLoop(head.nodes, space + '__');
    }
    
    if (tail.isNotEmpty) {
      _printNodesNoLoop(tail, space);
    }
  }
                       
  void printNodeLoop() {
    _printNodeLoop(this);
  }
  
  void printNodeNoLoops() {
    _printNodesNoLoop([this]);
  }
}
  

void main() {
  final testNode = 
  Node(text: 'a', nodes: [Node(text: 'b', nodes: [Node(text: 'b', nodes: [])]), Node(text: 'a')]);
  
  testNode.printNodeLoop();
  
  print('== == VS == ==');
  
  testNode.printNodeNoLoops();
}