These small teams can be much more effective and predictable than much larger teams that follow overly bureaucratic and prescriptive development processes.'-Todd Little, Sr. This book leads you from software process hell to successful software development by practical examples and useful samples.'-Basaki Satoshi, Schlumberger'A very powerful message, delivered in a variety of ways to touch the motivation and understanding of many points of view.'-Laurie Williams, Assistant Professor, North Carolina State University'A broad, rich understanding of small-team software development based on observations of what actually works.'-John Rusk'A superb synthesis of underlying principles and a clear description of strategies and techniques.'-Géry Derbier, Project Manager, Solistic'Alistair Cockburn shows how small teams can be highly effective at developing fit-for-purpose software by following a few basic software development practices and by creating proper team dynamics. Essential reading for anyone who shares the passion for creating quality software.'-Eric Olafson, CEO Tomax'Crystal Clear is beyond agile. Its concurrency model is inspired by communicating sequential processes (CSP) and implements lightweight fibers and channels (for interfiber communication) inspired by Go.'The best thinking in the agile development community brought to street-level in the form of implementable strategy and tactics. Crystal possesses a macro system and supports generics as well as method and operator overloading. It has automated garbage collection and offers a Boehm collector.

The advanced global type inference used by the Crystal compiler, combined with union types, gives it more the feel of a higher-level scripting language than many other comparable programming languages. In July 2016, Crystal joined the TIOBE index.Īlthough resembling the Ruby language in syntax, Crystal compiles to much more efficient native code using an LLVM backend, at the cost of precluding the dynamic aspects of Ruby.

The first official version was released in June 2014. The Crystal compiler was first written in Ruby, but later rewritten in Crystal, thus becoming self-hosting, as of November 2013. Initially named Joy, it was quickly renamed to Crystal.

Work on the language began in June 2011, with the aim of merging the elegance and productivity of Ruby with the speed, efficiency, and type safety of a compiled language.

Crystal programming language pdf