IntelliJ IDEA Team at Scala Days 2014

The Scala community knows that the place to be on June 16th – 18th is Scala Days 2014 conference. So, the entire team behind the IntelliJ Scala plugin went to Berlin to embrace the awesomeness of this event.

Besides attending the talks (I wish I had enough time to hear them all), we delivered our own presentation Good to Great: IntelliJ IDEA and Scala (hosted by Alexander).

We also had a booth with amazing giveaways that included IntelliJ IDEA Yo-Yos (and stickers):


Even though the distribution of Yo-Yos was, undoubtedly, our main goal, we were very happy to meet IntelliJ Scala plugin users in person. What can I say? Sometimes we had a feeling of being rockstars (thanks for all the praise, folks!), sometimes, well, we could only humbly promise to fix this or that bug…

Meeting real Scala rockstars like Martin, Jason, Josh, just to name a few, was a real pleasure.

Thanks to everyone who took care to answer our questionnaire. You’ve been very helpful, and here’s just a few stats we’ve collected: Continue reading

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Scala and Play 2.0 Plugins Update 0.38.437 is Out

Good news, everyone! The fresh versions of Scala and Play 2.0 plugins have arrived, and we’re going to briefly tell you what new goodies this update brings.

HOCON format

First of all, Roman Janusz has made a great contribution to Scala community by adding the HOCON format support to IntelliJ IDEA, and the Scala plugin now provides support for it out of the box.

Better import management

We have finally fixed the problem with incorrect imports (e.g. scala.Some), so you can use Optimize Imports to eliminate all bad imports in your code.

In addition, the Optimize Imports has been improved in several other ways:

  • Optimizing imports on the fly
  • Lexicographical sorting of import statements
  • Possibility to disable the grouping of imports from the same package in a single statement
  • Grouping imports
  • All imports are fully qualified by default

Faster and more user-friendly Scala worksheets

They’re just plain better. Read more details in the previous post.

Extract Trait refactoring

This is a new refactoring that helps you define new traits from existing classes.

Extract Method refactoring improved

This good old refactoring has been improved and can now search for duplicates and extract a case class when multiple output is detected. Plus, it now has fewer bugs and work a bit faster.

More inspections for collections

And last but not least, we have new code inspections for you! This time, they help you improve code working with collections:

  • contains(_ == x) ==> exists
  • getOrElse(null) ==> orNull
  • product, min, max ==> foldLeft, reduce
  • ==> fold
  • Map.get.getOrElse ==> getOrElse
  • !isEmpty ==> nonEmpty

That’s pretty much it. For the full list of changes, see the Release Notes.

As always, you’re welcome to share your feedback in our discussion forum as well as submit bug directly to the tracker.

Develop with Pleasure!

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Meet The New Scala Worksheets in IntelliJ IDEA

A few months ago we’ve significantly improved the Scala Worksheets performance. Today we made them even better, and by that we mean more user-friendly.

Now you can fold the output without affecting code on the left side, and expand only blocks output that match a specific statement:




Plus, you can improve evaluation performance by clearing the Make project option on the toolbar which disables automatic checking of project changes.

The new Scala Worksheets are available in the latest nightly build of the Scala plugin for IntelliJ IDEA 13.

Develop with Pleasure!


Posted in New Features | Tagged | 22 Comments

Scala and Play Plugins Update 0.36.431 in IntelliJ IDEA 13.1.2

New versions of Scala and Play plugins for IntelliJ IDEA 13.1.2 are available.

The new features in this release and previous 0.35.683 version include:

  • Extract Method improvements
  • Fixes for Dynamic implicit apply calls
  • i18n support fixed
  • Added uTest support
  • Scala Worksheet bugfixes
  • SBT support bugfixes
  • Play 2.0 support bugfixes
  • Improved multiline strings editing
  • Perfromance improvements (Structure View, i18n)
  • Memory performance improvements (Structural Types like in Scalaz)

Full changelist is available here: changelist on GitHub.


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Scala and Play Plugins Update in IntelliJ IDEA 13.1

This is never too late to deliver the good news, so here’s what you can find in the latest update for IntelliJ IDEA 13.1 Scala and Play plugins:

  • Scala worksheet improvements
  • Better SBT support
  • More stability and performance
  • And, of course, many bugfixes

Right now we are also working on other awesome new features, e.g. support for HOCON format in Play 2.0 plugin, so stay tuned for updates!

Posted in New Features, Release report | 12 Comments

Scala Worksheet: instant evaluation

More than year ago we implemented first version of Scala Worksheet. It had convenient interface, but it was possible to make coffee, while worksheet would finish evaluation, so it was almost unusable.

Now, in Scala plugin of versions 0.30.383 and 0.32.550, Scala Worksheet supports almost instant evaluation (don’t forget to use Ctrl + Alt + W shortcut):

Additionally your evaluation results will be saved even on the IDE restart until you will clean it or re-evaluate.

We are also planning to add highlighting for the output, so any suggestion are welcome as it’s not obvious how to do it.


Posted in Uncategorized | 58 Comments

Try Faster Scala Compiler in IntelliJ IDEA 13.0.2

The latest update to Scala plugin (v0.30.375) available for IntelliJ IDEA 13.0.2 lets you choose what compiler you want to use: SBT incremental or IntelliJ IDEA.

Continue reading

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Heading to the Perfect Scala Code Analysis

We are extremely happy to let you know that the latest version of the Scala plugin (0.29.479) for the upcoming IntelliJ IDEA 13.0.2 has no false error highlighting for our own source base anymore. Moreover, a number of corresponding tests have been added to our TeamCity server, so we don’t expect to see a regression further.

The next step will be using source base of an external popular open-source project as a test for spotting false errors highlighting. That’s why we ask you for suggestions on such projects.

Let’s make IntelliJ IDEA code analysis better!

Posted in Uncategorized | 31 Comments

Built-in SBT Support in IntelliJ IDEA 13

Today we are happy to announce that the built-in support for SBT projects is finally here. The newest version of Scala plugin for IntelliJ IDEA 13 (0.23.308) comes with the following list of features:

  • Import SBT project
  • Auto-import SBT projects
  • Highlighting for .sbt files

To import an SBT project please use one of these options:

  1. File → Open, then choose .sbt file to import it as project
  2. File → Import Project, then choose .sbt file or directory containing SBT project

Don’t forget to use Enable auto-import checkbox to have your IntelliJ IDEA project automatically synchronized with .sbt files.

More cool features as well as the support for integration between Play 2.0 and SBT are coming soon. Please feel free to share your feedback, feature requests or just report found bugs to our issue tracker.

If you’d like to contribute or check out the sources use these two projects:


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IntelliJ IDEA at SF Scala. Tips, Tricks and More

A few weeks ago Alexandr Podkhaliuzin, lead developer from JetBrains was invited to SF Scala to give a talk about Scala support in IntelliJ IDEA.

In his presentation he talked about Scala language and its non-trivial technical aspects which make development more complicated as compared to other languages, and how the IntelliJ IDEA helps developers to overcome these complications and essentially be more productive. The presentation mentions both well-known and brand new features, which will be available in the nearest release.

After a short delay we’d like to share the video and slides from the presentation with you.

Slides from the presentation can be found here.

Develop with Pleasure!

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