text: // Copyright 2019 Dalmo Cirne
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #ifndef TreeNode_hpp
  #define TreeNode_hpp
  
  template<class T>
  class BinaryTreeNode {
      public:
      BinaryTreeNode<T> *parent = nullptr;
      BinaryTreeNode<T> *left = nullptr;
      BinaryTreeNode<T> *right = nullptr;
      T value;
  
      BinaryTreeNode() = default;
  
      BinaryTreeNode(const T &value) {
          this->value = value;
      }
  
      BinaryTreeNode(T &&value) {
          this->value = value;
      }
  
      virtual ~BinaryTreeNode() {
          parent = left = right = nullptr;
      }
  };
  
  #endif
  