dart深复制

List和map的深复制

deepClone(obj) {
  dynamic newObj = obj is Map ? {} : [];
  if (obj is Map) {
    obj.forEach((key, value) { 
       if (obj[key] is Map || obj[key] is List) {
        newObj[key] = deepClone(value);
      } else {
        newObj[key] = value;
      }
    });
  }else{
    for(int i=0;i<obj.length;i++){
      if (obj[i] is Map || obj[i] is List) {
        newObj.add(deepClone(obj[i]));
      } else {
        newObj.add(obj[i]);
      }
      
    }
  }
  return newObj;
}