Software sits at the core of every financial transaction, manufacturing process, and mobile phone call. We depend on applications like these to run correctly and efficiently, be easy to scale and modify, and last for the long haul. Industry giants including Facebook, IBM, Twitter, and Bank of America trust Haskell, a powerful functional programming language, for mission-critical software. Haskell blends a rigorous mathematical precision with the tools and approachability of a modern programming language. With its combination of lazy evaluation, highly expressive static type system, and zero side effects, Haskell invites you to approach programming from a fresh perspective!

Exploring Haskell: Core Concepts is a collection of hand-picked chapters from two Manning books. This excellent starter guide aims to tame Haskell's reputed steep learning curve by spotlighting how easy it is to get started with this powerful language. In it, you’ll explore core concepts like type classes, derivation and polymorphism, composability with semigroups and monoids, lazy evaluation of I/O on the command line, and more. Finally, you’ll take a close look at how to design a standalone, multi-module Haskell program incorporating external packages. Compiled by computer science expert Dr. Marcello Seri, Exploring Haskell: Core Concepts will help you get started with Haskell and decide if a deeper exploration of Haskell is for you.