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 | 20 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.


Posted in Uncategorized | 4 Comments

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 | 52 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

Posted in New Features | Tagged , | 21 Comments

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:


Posted in New Features | Tagged , , | 102 Comments

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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Scala and Play 2.0 Plugins Update 0.22.302 is Available

Today the new versions of Scala and Play 2.0 plugins for IntelliJ IDEA 12.1 have been released and are available for download. The build process of Scala and Play plugins since today is similar, so Play plugin has the same build number as Scala plugin.

The new features in the release include:

  • Rearranger for Scala (for IDEA 13 only)
  • New extractors support for Scala 2.11
  • Rename and find usages for scala setters


  • SCL-5778 Rename of scala members and classes from java code
  • SCL-5779 Renaming usages of scala objects in java code
  • SCL-4336 in-place rename of back-ticked references
  • SCL-3926 Option for not renaming companion class or object
  • SCL-5579 Class with backticks now resolved from anywher
  • SCL-6010 Fixed call by name parameters in Java
  • SCL-5973 Override and implement method actions does not use procedure syntax

This is the last feature release for IntelliJ IDEA 12 (only bugfixes releases are expected). There will no nightly builds for IntelliJ IDEA 12 anymore. We start nighlty builds for IntelliJ IDEA 13 (Cardea).

Please note that if you are running IntelliJ IDEA 13 EAP you should use 0.24.50 (or higher) version of Scala and Play plugins. They are compatible with the latest EAP (132.425 or higher).


Posted in Uncategorized | 7 Comments

Scala and Play 2.0 Plugins 0.19.297 Update is Available

Today the new versions of Scala and Play 2.0 plugins for IntelliJ IDEA 12.1 have been released and are available for download. In case if you have the plugins already installed just press Update Plugin. From now the build process of Scala and Play 2.0 plugins is common, so Play 2.0 plugin has the same build number.

Please note that if you are running IntelliJ IDEA 13 EAP you should use 0.21.45 (or higher) version of Scala and Play 2.0 plugins. This plugin will be available to use with upcoming EAP (32.106 or bigger)

The new features in the release include:

  • Convert Scala to Java collection (contribution by jozic)
  • Global completion for type aliases
  • Completion based on runtime time in debugger evaluate expression
  • Generate companion object action
  • Generate equals/hashCode (available for IDEA 13 only)


  • Fixes in parallel compilation of independent modules.
  • Better “show type on mouse” action. No blue highlighting, configurable delay.
  • SCL-6018 Inplace rename does not work for declarations and definitions
  • SCL-5970 Function rename doesn’t rename overriden methods
  • Evaluate expression in debugger for interpolated strings
  • Fixes in Introduce Variable
  • SCL-5592 Better path dependent types resolve in case of selector set imports, probably with renames
  • SCL-5938 Evaluate expression in anonymous functions and for loops
  • Fixed resolve precedence between package local classes and imported classes
  • Fixed some red code issues in projects, which use Spray library
  • Bugfixes in Play 2.0 plugin including better parser and analyzer

Here you can see, that plugin version for IDEA 13 and IDEA 12 are slightly different. Next October release will be remain almost synchronous, however after that development will be moved for IDEA 13 and almost everything will be in releases for IDEA 13 only.



Posted in Release report | 10 Comments