Download or read book Design Patterns: Elements of Reusable Object-Oriented Software written by Erich Gamma and published by Pearson Education India. This book was released on 1995 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capturing a wealth of experience about the design of object-oriented software, four top-notch designers present a catalog of simple and succinct solutions to commonly occurring design problems. Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves.