Scala 2 introduction
For over a decade Scala has enabled application developers to build asynchronous, resilient, scalable and testable applications. With Scala.js it also enabled frontend developers to build robust, strongly-typed and highly efficient front-end web applications.
In this course, developers will learn how to solve complex problems in application development using Scala 2. Upon completion of the course, attendees will be confident using the Scala 2 language (and common libraries, like Scala 2 Collections) to build modern high-performance, type-safe applications that don't rely on shared mutable state, precisely keep track and handle all errors, can be easily tested and maintained.
Who Should Attend
Developers who would like to write modern asynchronous, resilient, and highly-performant applications that are robust, testable, and powerful.
Prerequisites
Good working knowledge of any programming language, including familiarity with control-flow operators, recursion, data modeling, error management, dependency injection and testing.
Building
You will need to have Java 8 or 11 installed. Follow the "Install Scala" instructions on Getting Started page of Scala documentation.
The project contains an SBT build file. SBT is the most common Scala build tool. You can download the build tool here.
SBT build files can be imported into IntelliJ IDEA, an IDE that has a plugin for developing Scala applications.
Alternately, some people use Visual Studio Code to develop Scala applications. If you choose to use Visual Studio Code, then make sure you install the Metals plugin and the Scala Syntax plugin.
Even if not using IntelliJ IDEA or Visual Studio Code with Metals, you can build the project from any terminal by using SBT directly.
After opening a terminal and changing the directory to wherever you downloaded the files, simply enter the following command:
sbt
This will start SBT in interactive mode, where you can type commands into the console in order to compile, run, and test your SBT project.
To compile the code in the project, type the following command at the SBT prompt:
compile
If there are any compiler errors, they will be reported to you, and you can edit the source code to fix the compiler errors and try again.
Alternately, you can put SBT into continuous compilation mode. In this mode, SBT will attempt to compile your project whenever any files change state.
To place SBT into this mode, type the following command at the SBT prompt:
~compile
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