scala

Improved support for braceless Scala syntax IntelliJ IDEA can now desugar braceless Scala code properly, and it handles refactorings where the “fewer braces” feature is used. It also supports braceless syntax in worksheets and correctly interprets indentation when you move extensions methods up and down in your code. The indentation of the extension method is carried over correctly Streamlined import management If you use compiler-based highlighting, until now all imports have been marked as used. Scala 3.3, however, introduced a new compiler option, -Wunused:imports. The IDE c

A full-blown IDE is one of the most complicated applications you can find on an average laptop. This is why we – the Scala plugin team at JetBrains – from time to time receive reports that our product lags in certain situations or works slowly in general. In some of these cases we can help, but in others – for example, when your codebase is big and complicated, or when your machine is old – there is not much we can do. Instead, there are some things you can try yourself to improve your IntelliJ IDEA and the Scala plugin experience, like implementing configuration tweaks and maintaining good co

This release has been again focused on Scala 3, but there are also quite a few other improvements. Better Scala 3 support In v2022.3, we’ve introduced a large number of upgrades to provide better Scala 3 support. The IDE now supports parameter untupling and quoted patterns, and it features many improvements to the support for match types and type variables. There is now type inference for type variables, and they are parsed correctly for pattern-matching purposes. Named arguments in the trait constructor are now correctly handled, and you can use an action to quickly create a Scala 3 enu

ScalaCon 2022 has come and gone. It started on Tuesday, October 4, and over the course of 4 days, the audience had the chance to enjoy 21 talks and 2 keynotes. JetBrains was a Gold Sponsor of the event, which meant that we, the Scala Plugin team, had the opportunity to participate, present a lightning talk, and answer questions from attendees who came to our virtual booth. (more…)

This release has been again focused on improving Scala 3 support, but there are also a few other improvements. Better Scala 3 support As of v.2022.2, IntelliJ IDEA can read match types from .tasty files, properly parse them, resolve type variables, use them as type arguments, support inspections, and show types as text. On top of that, we’ve added support for Option-less extractors, type lambdas and polymorphic function types, type-level compiler intrinsics, and ? as a wildcard together with _ in Scala 2.13.9 and 2.12.16. Copy-pasted code is also now properly indented. Compiler

One of the things IntelliJ IDEA is most famous for is its huge variety of helpful inspections and warnings. They make the lives of programmers significantly easier, frequently showing them errors in logic or style that they wouldn’t have noticed otherwise. Those inspections come in various shapes and sizes, ranging from simple pattern searches to highly sophisticated inspections that require tons of complex static code analysis behind the scenes. Among the most advanced examples of the latter are those offered with the help of dataflow analysis. These inspections have been available for

Package Search is a service developed by JetBrains that supports searching for libraries from multiple repositories such as Maven Central, Google Maven, and others. Since its introduction at the end of 2019, the Package Search plugin has made searching for and managing dependencies for Maven and Gradle projects more convenient. Starting with the Scala plugin 2021.2 release, the Package Search plugin features will also be available for sbt projects. In addition, the Package Search APIs are integrated to help users manage library dependencies directly from the IntelliJ IDEA editor. From th

Because Scala is a curly-bracket language, adding and removing curly braces is an integral part of Scala programmers' everyday life. Those actions compound, so every improvement in this area matters. To understand the new advances, let us first take a take a look at it from historical perspective (or just watch this). Before At the beginning, there was no IDE assistance, so you had to tinker with curly braces manually: https://blog.jetbrains.com/wp-content/uploads/2020/07/braces-1.mp4 Not only did this require more keystrokes, but the code was not valid for long. It was not good... But now, t

Implicits are magical. But every wizard knows that any sufficiently complex magic requires a good enough magic wand. In the case of implicits, the Scala plugin can work just as well, or maybe even better. You can already use View | Show Implicit Hints (Ctrl + Alt + Shift + "+") to see beyond appearances: The Scala plugin can show you how impicits are derived and where they come from (NB: "ambiguous", not "amphibious"; see more of this in action). So far so good, but suppose that implicits are not yet there: If you have a pre-2020.2 version of the plugin installed, feel free to co