23 struct Book : public pw::IntrusiveMap<uint32_t, Book>::Pair {  struct
25   using Pair = pw::IntrusiveMap<uint32_t, Book>::Pair;  argument
28   Book(const char* name, uint32_t oclc) : Pair(oclc), name_(name) {}  in Book()  function
35 std::array<Book, 8> books = {{
46 pw::IntrusiveMap<uint32_t, Book> library(books.begin(), books.end());
48 void VisitLibrary(pw::IntrusiveMap<uint32_t, Book>& book_bag) {  in VisitLibrary()
61       Book& book = *iter;  in VisitLibrary()  local
63       book_bag.insert(book);  in VisitLibrary()
75   examples::Book book = {"One Hundred Years of Solitude", 17522865u};  in TEST()  local
76   pw::IntrusiveMap<uint32_t, examples::Book> book_bag;  in TEST()
77   book_bag.insert(book);  in TEST()