This book provides a gentle, software engineering oriented introduction to category theory. Assuming only a minimum of mathematical preparation, this book explores the use of categorical constructions from the point of view of the methods and techniques that have been proposed for the engineering of complex software systems: object-oriented...

R is a high-level language and an environment for data analysis and graphics. The design of R was heavily influenced by two existing languages: Becker, Chambers and Wilks’ S and Sussman’s Scheme. The resulting language is very similar in appearance to S, but the underlying implementation and semantics are derived from Scheme. This...

• Conceptualize and build state-of-art GUI applications with Tkinter
• Tackle the complexity of just about any size GUI application with a structured and...

Over the last several years, fiscal discipline has really dominated the industry. Both consumers and businesses expect far more from their communications providers than they did just a few years ago. Offering simple telephone dial tone and an Internet connection are not going to be enough for success. At the same time, however, service providers...