Questions related to the Scala plugin in IntelliJ IDEA.
The IntelliJ Scala plugin offers Scala editing support in the IntelliJ IDEA IDE.
Questions tagged [intellij-scala]
44 questions
16
votes
5 answers
IntelliJ can't connect to its own Scala compile server
I am using latest IntelliJ IDEA (2016.1.1) - but I have seen this behaviour in previous versions too - developing in Scala with latest Scala plugin (3.0.3).
When I try to Run/Debug a test or code, IDEA will start Making the project, but will then…
mdm
- 3,928
- 3
- 27
- 43
16
votes
2 answers
In Scaladoc, how to link to a method in the same class?
What is the correct way to create link to a method in the same class?
Scaladoc documentation doesn't have examples of this.
Consider a class such as:
package controllers
// import ...
class AccountController extends Controller with Secured {
…
Jonik
- 80,077
- 70
- 264
- 372
9
votes
6 answers
java.lang.NoClassDefFoundError: scala/reflect/api/TypeCreator
I'm getting this error message when I run my sbt project in IntelliJ by right clicking "Debug".
/home/johnreed/Applications/jdk1.8.0_73/bin/java -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:34395,suspend=y,server=n -Dfile.encoding=UTF-8…
Michael Lafayette
- 2,972
- 3
- 20
- 54
8
votes
1 answer
'wrong top statement declaration' when using slick in IntelliJ
I'm currently porting a project from scala 2.9 to 2.10, therefore I have to use slick instead of scalaquery. I'm using slick 2.1.0 for now since it supports MS Access.
According to this tutorial and the upgrade guide I changed Robs from object to…
SimonH
- 1,385
- 15
- 35
5
votes
1 answer
Is there a way New->Scala Class in intellij can default to creating a case class (vs a regular class)?
When I right-click and follow New->Scala Class, Intellij defaults to creating a new regular class. I'd like it to default to creating a case class.
A small thing... but annoying when creating a lot of new classes.
Is it configurable somewhere?
Greg
- 10,696
- 22
- 68
- 98
5
votes
2 answers
Scala worksheet can not resolve class name - IntelliJ IDEA
I am following along with a lecture, the lecturer is using Eclipse but I am using IntelliJ IDEA Community Edition 15.0.6, and the code on a Scala worksheet named rationals.scala is as follows
object rationals{
val x = new Rational(1,2)
x.numer
…
Max Wen
- 737
- 2
- 10
- 21
3
votes
2 answers
Scala List: why the IDEA prompts that Unused expression without side effects
The program successfully prints the 3,1,2 but I am curious about why it says that this expression is unused?
package Collection
object basics {
def main(args: Array[String]): Unit = {
var res = List[Int](1, 2)
res.::=(3) // Unused…
cnidaye
- 103
- 6
3
votes
2 answers
Intellij Scala worksheet Run type difference explain
In Intellij Scala Worksheet support, what is the difference between the Run types i.e PLAIN vs REPL ?
MaatDeamon
- 9,532
- 9
- 60
- 127
3
votes
0 answers
Move refactoring is supported only for stable object members
I'm receiving the error message move refactoring is supported only for stable object members when I try to refactor / move xyz(), using IntelliJ 2018.2 Scala Plugin 2018.2.11
What is the reason for this limitation? As a work-around I do the…
Hartmut Pfarr
- 5,534
- 5
- 36
- 42
3
votes
0 answers
How to use WatchSource in SBT 1.x to filter files?
I had the following code like the following that worked previously:
.settings(watchSources := watchSources.value.filterNot(_.getPath.contains("target")))
In SBT 1.x this results in:
error: value getPath is not a member of…
bbarker
- 11,636
- 9
- 38
- 62
2
votes
1 answer
Call Scala Intellij Refresh Action From some other plugin
The requirement is to call Scala sbt plugin action (Refresh Action) and intelliJ synchronize all action from a custom plugin. As described here, we can use below syntax to call Actions of other plugins from our custom plugin…
mogli
- 1,549
- 4
- 29
- 57
2
votes
2 answers
Setting scalacOptions for IntelliJ IDEA
I have a sbt project which I have imported into IntelliJ IDEA. This project includes the splain compiler plugin which includes colour codes in some compiler messages.
When compiling in IntelliJ IDEA then these colour codes are not interpreted. I can…
steinybot
- 5,491
- 6
- 37
- 55
2
votes
1 answer
Intellij SBT project: How to change the content roots?
This is the current content root configuration in my project:
However, I want the "scala" directory to be the actual test content root, and not the directory named "test". If I modify it, I get the warning that "Module is imported from Sbt. Any…
Gal
- 5,338
- 5
- 33
- 55
2
votes
1 answer
IntelliJ sbt project download sources behind proxy or from nexus server
I am using sbt behind a proxy, with a corporate Nexus server.
My setup works correctly, using CNTLM
JAVA_OPTS="-Dhttp.proxyHost=10.0.2.2 -Dhttp.proxyPort=3128 -Dhttps.proxyHost=10.0.2.2…
Atais
- 10,857
- 6
- 71
- 111
2
votes
0 answers
Why does intellij not accept this scala code
The following code is compiling just fine with nsc:
trait A {
type B[+T]
type C[+T] <: B[T]
def c: C[Int]
}
object Q {
val a: A = ???
val b: a.B[Int] = a.c
}
but intellij doesn't accept it with the error message
expression of type…
Fabian Schmitthenner
- 1,696
- 10
- 22