- Install bloop
1.0.0-M11by following the Bloop installation instructions. Then, make sure you start up the bloop server on the background and to generate the configuration files by runningbloopInstallin your build tool. - Install IntelliJ 2018.2 EAP and then enable the nightly version of the Scala Plugin by opening Preferences | Languages & Frameworks | Scala | Updates tab and selecting the Nightly plugin update channel:

- check for updates and download the Scala plugin Nightly release.
- Reboot IntelliJ. The Scala plugin should now have version 2018.2.277 or higher (check in Preferences | Plugins)
- Open the "Find Action" search box (usual hotkey Shift+Ctrl+A or shift+cmd+A) and search for "bsp". The search box will show the full action name: "Enable experime
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A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.
val square : Int => Int = x => x * x