Book Image

Mastering Functional Programming

Book Image

Mastering Functional Programming

Overview of this book

Functional programming is a paradigm specifically designed to deal with the complexity of software development in large projects. It helps developers to keep track of the interdependencies in the code base and changes in its state in runtime. Mastering Functional Programming provides detailed coverage of how to apply the right abstractions to reduce code complexity, so that it is easy to read and understand. Complete with explanations of essential concepts, practical examples, and self-assessment questions, the book begins by covering the basics such as what lambdas are and how to write declarative code with the help of functions. It then moves on to concepts such as pure functions and type classes, the problems they aim to solve, and how to use them in real-world scenarios. You’ll also explore some of the more advanced patterns in the world of functional programming such as monad transformers and Tagless Final. In the concluding chapters, you’ll be introduced to the actor model, which you can implement in modern functional languages, and delve into parallel programming. By the end of the book, you will be able to apply the concepts of functional programming and object-oriented programming (OOP)in order to build robust applications.
Table of Contents (17 chapters)

Data structures in different programming languages

From the preceding discussion, you may conclude that there is a substantial difference between a functional and comparative approach to programming. While imperative programming is focused on algorithms, declarative programming is focused on the phenomena produced by these algorithms.

Imperative programming allows you to produce phenomena with the help of algorithms. Declarative programming names the phenomena you may need and then allows you to call them by name. This abstracts away all the details of the inner workings of the phenomena.

This is reflected in the separation between the approaches to data structures in different languages. Imperative programming languages, such as C++ or Java, will have their data structures, specifically, collections, implemented in a low-level manner. Typically, they will be mutable and will...