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The TypeScript Workshop

The TypeScript Workshop

By : Ben Grynhaus , Jordan Hudgens , Rayon Hunte , Matt Morgan , Wekoslav Stefanovski
4.7 (19)
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The TypeScript Workshop

The TypeScript Workshop

4.7 (19)
By: Ben Grynhaus , Jordan Hudgens , Rayon Hunte , Matt Morgan , Wekoslav Stefanovski

Overview of this book

By learning TypeScript, you can start writing cleaner, more readable code that’s easier to understand and less likely to contain bugs. What’s not to like? It’s certainly an appealing prospect, but learning a new language can be challenging, and it’s not always easy to know where to begin. This book is the perfect place to start. It provides the ideal platform for JavaScript programmers to practice writing eloquent, productive TypeScript code. Unlike many theory-heavy books, The TypeScript Workshop balances clear explanations with opportunities for hands-on practice. You’ll quickly be up and running building functional websites, without having to wade through pages and pages of history and dull, dry fluff. Guided exercises clearly demonstrate how key concepts are used in the real world, and each chapter is rounded off with an activity that challenges you to apply your new knowledge in the context of a realistic scenario. Whether you’re a hobbyist eager to get cracking on your next project, or a professional developer looking to unlock your next promotion, pick up a copy and make a start! Whatever your motivation, by the end of this book, you’ll have the confidence and understanding to make it happen with TypeScript.
Table of Contents (16 chapters)
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Preface

Functions in TypeScript

A simple definition of function is a set of statements that can be invoked; however, the use and conventions of functions cannot be summarized so easily. Functions in TypeScript have greater utility than in some other languages. In addition to being invoked as normal, functions can also be given as arguments to other functions and can be returned from functions. Functions are actually a special kind of object that can be invoked. This means that in addition to parameters, functions can actually have properties and methods of their own, though this is rarely done.

Only the smallest of programs will ever avoid making heavy use of functions. Most programs will be made up of many .ts files. Those files will typically export functions, classes, or objects. Other parts of the program will interact with the exported code, typically by calling functions. Functions create patterns for reusing your application logic and allow you to write DRY (don't repeat yourself...

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