ceph/src/boost/libs/functional/hash/examples/books.hpp

   1
   2 // Copyright 2005-2009 Daniel James.
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 // This example illustrates how to use boost::hash with a custom hash function.
   7 // The implementation is contained in books.cpp
   8
   9 #include <cstddef>
  10 #include <string>
  11
  12 namespace library
  13 {
  14     struct book
  15     {
  16         int id;
  17         std::string author;
  18         std::string title;
  19
  20         book(int i, std::string const& a, std::string const& t)
  21             : id(i), author(a), title(t) {}
  22     };
  23
  24     bool operator==(book const&, book const&);
  25     std::size_t hash_value(book const&);
  26 }