Read Eval Print and Loop (REPL) is also know as a language shell. Many other languages have shells, like Lisp, Python, and Ruby for instance. The REPL is a simple environment to experiment the language in. It's possible to write very complex programs using REPL, but this is not the REPL goal. Using REPL does not invalidate the usage of an IDE like Eclipse or IntelliJ IDEA. REPL is ideal for testing simple commands and programs without having to spend much time configuring projects like you do with an IDE. The Scala REPL allows you to create a variable, functions, classes, and complex functions as well. There is a history of every command you perform; there is some level of autocomplete too. As a REPL user, you can print variable values and call functions.
Building Applications with Scala
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Building Applications with Scala
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Overview of this book
<p>Scala is known for incorporating both object-oriented and functional programming into a concise and extremely powerful package. However, creating an app in Scala can get a little tricky because of the complexity the language has. This book will help you dive straight into app development by creating a real, reactive, and functional application. We will provide you with practical examples and instructions using a hands-on approach that will give you a firm grounding in reactive functional principles.</p>
<p>The book will take you through all the fundamentals of app development within Scala as you build an application piece by piece. We’ve made sure to incorporate everything you need from setting up to building reports and scaling architecture. This book also covers the most useful tools available in the Scala ecosystem, such as Slick, Play, and Akka, and a whole lot more. It will help you unlock the secrets of building your own up-to-date Scala application while maximizing performance and scalability.</p>
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Building Applications with Scala
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Table of Contents (17 chapters)
Building Applications with Scala
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Free Chapter
Introduction to FP, Reactive, and Scala
Creating Your App Architecture and Bootstrapping with SBT
Developing the UI with Play Framework
Developing Reactive Backing Services
Testing Your Application
Persistence with Slick
Creating Reports
Developing a Chat with Akka
Design Your REST API
Scaling up
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