C++ Template Metaprogramming
Solutions to the exercises throughout the book
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chapter-5-tree.hpp
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1// ===-- chapter-5/chapter-5-tree.hpp --------------------- -*- C++ -*- --=== //
9#ifndef CHAPTER_5_10_TREE
10#define CHAPTER_5_10_TREE
11
12#include <boost/mpl/void.hpp>
13using boost::mpl::void_;
14
15
16namespace chapter5 {
17
19struct tree_tag { };
20
31template <typename Cur = void_, typename L = void_, typename R = void_>
32struct tree
33{
34 typedef tree<Cur, L, R> type;
35 typedef tree_tag tag;
36};
37
38} // namespace chapter5
39
40#endif // CHAPTER_5_10_TREE
chapter5
Provide utilities availble to all Chapter 5 solutions.
Definition: chapter-5-tiny.hpp:37
chapter5::tree_tag
Used for Boost MPL's tag-based dispatch of sequence metafunctions.
Definition: chapter-5-tree.hpp:19
chapter5::tree
A basic type to represent a binary tree.
Definition: chapter-5-tree.hpp:33
chapter5::tree::type
tree< Cur, L, R > type
Definition: chapter-5-tree.hpp:34