CONCEPTION ORIENTEE OBJET, by Bertrand Meyer, Eyrolles

This book is pretty hard to read!
First, its a huge book. Too big for me to read in one go. So big reading it may seem discouraging. So I read chapters from time to time.
Second, it's complicated. Not because it isn't well written - but because the author explains the real issues of object-oriented programming.
The chapter on design-by-contract is fabulous. This is a practice which really made us improve our programming. This book is a reference.
What I put into practice:
+ My mentor made me apply design-by-contract with assertions.
+ I express design in source.
+ I autodocument the code.

I RECOMMEND THIS BOOK.