node.hpp

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#ifndef DATA_STRUCTURES_NODE_HPP_
#define DATA_STRUCTURES_NODE_HPP_
 
#include <iostream>  
#include <memory>    
#include <vector>    
 
template <class ValueType>
struct Node {
    using value_type = ValueType;
    ValueType data = {};
    std::shared_ptr<Node<ValueType>> next = {};
};
 
template <typename Node, typename Action>
void traverse(const Node* const inNode, const Action& action) {
    if (inNode) {
        action(*inNode);
        traverse(inNode->next.get(), action);
    }
}
 
template <typename Node>
void display_all(const Node* const inNode) {
    traverse(inNode,
             [](const Node& curNode) { std::cout << curNode.data << " "; });
}
 
template <typename Node>
std::vector<typename Node::value_type> push_all_to_vector(
    const Node* const inNode, const std::size_t expected_size = 0) {
    std::vector<typename Node::value_type> res;
    res.reserve(expected_size);
    traverse(inNode,
             [&res](const Node& curNode) { res.push_back(curNode.data); });
    return res;
}
 
#endif  // DATA_STRUCTURES_NODE_HPP_