Yogesh Sajanikar [Sajanikar - Haskell Cookbook: Build functional applications using Monads, Applicatives, and Functors

BIRMINGHAM - MUMBAI

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First published: September 2017

Production reference: 1210917

ISBN 978-1-78646-135-3

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Yogesh Sajanikar has received his bachelor's degree in Mechanical Engineering from Shivaji University, India, along with a gold medal and a master's degree in Production Engineering from the Indian Institute of Technology, Bombay, India.

Yogesh has an experience of more than 20 years, and he has extensively worked with Product Lifecycle Management ( PLM ) and Computer Aided Design ( CAD ) software development firms, and architected solutions for domains such as Construction and Shipping Domain.

Having hooked on to functional programming, he moved into the Finance domain and worked as an enterprise architect; he has also worked with Scala/F# and Haskell. Currently, he is working as a CTO for a startup. He has also started local Haskell meetups and has been an active participant in meetups and functional conferences.

Yogesh believes in the open source movement, and believes in giving back to the open source community.

Fabian Linzberger is a functional programming enthusiast and practitioner. He discovered Haskell in 2010 and it has been his favorite programming language ever since. You can find some of his code (some of it in Haskell) on GitHub ( https://github.com/lefant/ ) or visit his personal homepage and check out his blog ( https://e.lefant.net/ ).

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Functional programming has been gaining lot of momentum recently. We are seeing different paradigms of functional programming creeping into imperative languages such as C++, C#, and Python. There are languages such as Scala that try to offer best of both worlds, that is, object-oriented programming and functional programming.

As Haskell is a pure and non-strict language, and strictly separates pureness from effect-full computations, it really stands out among these languages. Its strong theoretical basis, such as an elaborate type system, combined with concise and expressive syntax, gives Haskell a unique flavor. It really helps in programming declaratively by specifying what rather than how! In this book, we will focus on practical aspects of the language.
Haskell Cookbook is meant for programmers who have a programming background. Most of the readers should be acquainted with an imperative language, such as Java/Python or C++.

This cookbook can be logically divided into two parts, the first five chapters serve as building blocks for programming in Haskell. These chapters cover syntactical and semantic details of the language by describing how to use and define functions and data types. In these chapters, we also cover type classes and the Functor, Applicative, and Monads concepts .
The last seven chapters will introduce you to the practical aspects of usage of Haskell and its rich set of libraries. These chapters will take you through containers in Haskell and backend development (developing with database) to frontend development (web framework). The last three chapters focus on advanced concepts, such as doing parallel and distributed programming in Haskell.