Today’s business applications require rapid turnaround, bug-free releases, and sophisticated functionality. In the more than 20 years since Haskell’s creation, its compilers, runtimes, frameworks, libraries, and community have grown and matured into a system that already supports many production-ready , high-quality applications. Haskell’s functional programming model, advanced type system and sophisticated abstractions have already found their way into many mainstream languages such as C#, Java and C++. Haskell enables you to create the powerful abstractions and reusable, reliable components necessary to make your solutions the best in their class.

This practical guide shows you how to use the powerful tools available in the Haskell ecosystem to build applications faster, with less waste and more features. This book takes you beyond the basics and teaches you how to maximize your productivity with the language. You will see how to customize your development environment by writing your own macros for GHCi; learn to recognize when and why you should be using sophisticated abstractions such as applicative functors and monads; how to best use QuickCheck and other testing frameworks unique to Haskell; and how to apply all these tools to building applications for your phone, desktop, server, or browser.