To be able to run an interactive programming session in the previous chapters, we have downloaded and installed a tool named
Typesafe Activator. Running either as a command-line tool or through a web browser, the activator lets us create and execute a sample project out of a template, in this case, a minimal
hello-scala project. From it, we have accessed the SBT console, which acts as a REPL.
Typesafe Activator can be seen as a lightweight IDE powered by SBT. It provides many project templates that programmers can reuse as a starting point in their new development project.
Open a command terminal window and go to the directory where you extracted the activator, ...