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Learn Scala Programming

Learn Scala Programming

By : Schmidt
1.5 (2)
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Learn Scala Programming

Learn Scala Programming

1.5 (2)
By: Schmidt

Overview of this book

The second version of Scala has undergone multiple changes to support features and library implementations. Scala 2.13, with its main focus on modularizing the standard library and simplifying collections, brings with it a host of updates. Learn Scala Programming addresses both technical and architectural changes to the redesigned standard library and collections, along with covering in-depth type systems and first-level support for functions. You will discover how to leverage implicits as a primary mechanism for building type classes and look at different ways to test Scala code. You will also learn about abstract building blocks used in functional programming, giving you sufficient understanding to pick and use any existing functional programming library out there. In the concluding chapters, you will explore reactive programming by covering the Akka framework and reactive streams. By the end of this book, you will have built microservices and learned to implement them with the Scala and Lagom framework.
Table of Contents (19 chapters)
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Running the application

Now, we have all of our services built together and can run the project as a whole using the runAll command as before. We also need to have an Akka-HTTP example from the previous chapter running and have enough inventory so that the boy can get some groceries from it:

The previous screenshot shows two Terminal windows: on the right the Akka HTTP shop from Chapter 14 is running and on the left the runAll command is ready to be executed. The runAll command takes some time to start all of the subsystems and produces a lot of output in the console.

At the moment of this writing the processing pipeline stopped just before returning baked cookies to the manager. We reported this issue as a Lagom bug (https://github.com/lagom/lagom/issues/1616) but unfortunately got no feedback from Lagom team yet. We left the example as it is with the hope that the issue will...
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