A fast paced guide for JavaScript developers for writing safe, fast, and reusable code by leveraging ResaonML's strong static type system
Key Features
Reduce code errors with the power of type systems
Employ static typechecking and genericity to promote code reuse and consistency
Understand functional programming which is the foundation of type-driven development
Book DescriptionType-driven development is an approach that uses a static type system to achieve results including safety and efficiency. Types are used to express relationships and other assumptions directly in the code, and these assumptions are enforced by the compiler before the code is run. Learn Type-Driven Development covers how to use these type systems to check the logical consistency of your code.
This book begins with the basic idea behind type-driven development. You'll learn about values (or terms) and how they contrast with types. As you progress through the chapters, you'll cover how to combine types and values inside modules and build structured types out of simpler ones. You'll then understand how to express choices or alternatives directly in the type system using variants, polymorphic variants, and generalized algebraic data types. You'll also get to grips with sum types, build sophisticated data types from generics, and explore functions that express change in the types of values. In the concluding chapters, you'll cover advanced techniques for code reuse, such as parametric polymorphism and subtyping.
By end of this book, you will have learned how to iterate through a type-driven process of solving coding problems using static types, together with dynamic behavior, to obtain more safety and speed.
What you will learn
Use static types to capture information, making programs safer and faster
Learn ReasonML from experienced type-driven developers
Enhance safety by simply using basic types
Understand the most important type-driven concepts with simple examples
Explore a design space using static typing and find the best way to express your system rules
Use static types and dynamic runtime in harmony to write even safer and faster code
Who this book is forIf you're a programmer working with dynamically typed languages and are looking for ways to mitigate production runtime errors, Learn Type-Driven Development is for you. You'll also find this book helpful if you're a programmer working with statically typed languages looking for increased safety and improved performance.
Sprache
Verlagsort
Zielgruppe
Maße
Höhe: 235 mm
Breite: 191 mm
Dicke: 11 mm
Gewicht
ISBN-13
978-1-78883-801-6 (9781788838016)
Copyright in bibliographic data and cover images is held by Nielsen Book Services Limited or by the publishers or by their respective licensors: all rights reserved.
Schweitzer Klassifikation
Yawar Amin is a software engineer working in Toronto, Canada. He has worked on data science-based recommendation systems, customer-facing applications, and large data engineering projects. In his spare time, he likes to read, write, and use the Oxford comma whenever he can. Kamon Ayeva is a web developer/DevOps engineer working with a variety of tools. He spends most of his time building projects using Python's powerful scripting capabilities, add-on libraries, and web frameworks such as Django or Flask. Kamon has been using Python in professional contexts for more than 12 years. Based on his recent experience of using the type system that was added to Python 3, as well as developing a user interface using the React framework, latterly, he has started exploring type-driven development in JavaScript.
Table of Contents
Start Type-Driven Development
Program with types and values
Package types and values together
Group values together in types
Put alternative values in types
Make types that can 'slot in' any other type
" Make types that represent operations"
"Reuse code with many different types"
"Extend types with new behavior"
"Bring it all together"
