Chapter 23: Boost Libraries, Technical Report 1 and C++0x

1. fig23_02.cpp - Regular expressions checking birthdays.
2. fig23_04.cpp - Validating user input with regular expressions.
3. fig23_05.cpp - regex_replace() and regex_token_iterator
4. 23.6.1 shared_ptr
   • Book.h
   • Book.cpp
   • fig23_08.cpp
     1. L.10 typedef shared_ptr<Book> BookPtr;
     2. L.22 "true" when it is unnecessary to exchange
     3. L.35 bookPtr.use_count()
5. 23.6.2 weak_ptr
   • Author.h
   • Book.h
   • Author.cpp
   • Book.cpp
   • fig23_13.cpp
     • L.20-21 Creates a circular referenc between Author and Book
6. fig23_15.cpp - Lambda Function