All Questions
Tagged with read-eval-print-loop scala
236 questions
1
vote
1
answer
54
views
Scala REPL missing commands
I have installed scala through coursier. Running scala --version in the terminal gives the following:
C:\Users\Me>scala --version
Scala code runner version: 1.4.3
Scala version (default): 3.5.1
...
- 135
1
vote
0
answers
162
views
How to set Intellij Scala REPL environment variables?
When invoking the Scala REPL in intellij (Tools --> Scala REPL), how can environment variables be manipulated for the REPL session?
After launching the REPL a run configuration is created, but ...
0
votes
0
answers
41
views
Update value printed to console
I'm attempting to update a value printed to the console in order to implement a simple REPL that supports predictive commands.
So after "->" is printed to the screen using
Console.print(&...
- 54k
1
vote
0
answers
368
views
Setting javaOptions in sbt:console task
How can I set javaOptions in an sbt project so that they'll be properly propagated inside the sbt:console task? I want have the vector incubator module visible inside the sbt console repl.
By adding ...
0
votes
1
answer
152
views
Why spark-shell throws NoSuchMethodException while calling newInstance via reflection
spark-shell throws NoSuchMethodException if I define a class in REPL and then call newInstance via reflection.
Spark context available as 'sc' (master = yarn, app id = application_1656488084960_0162).
...
- 99
1
vote
1
answer
491
views
Cannot use :paste in Scala 3.0.0 REPL
In Scala 2.x I use :paste for multi-line pasting. I am using Scala 3.0.0 and using the same approach throws an error:
scala> :paste
Unknown command: ":paste", run ":help" for a ...
- 7,811
0
votes
1
answer
236
views
Ammonite Ivy Import Fails For Joda Time
I have the following in my predef.sc file and when I load Ammonite via my terminal, it fails for one library, the joda-time:
import $ivy.`org.typelevel::cats-core:2.1.1`, cats._, cats.implicits._
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- 15.5k
4
votes
1
answer
366
views
Expand Code to Raw AST Scala 3 in the REPL
I am currently doing a lot of compiler research. This not only entails to writing compiler plugins but also modifying the dotty compiler, from the parser to the typer. Therefore I need to constantly ...
- 2,734
0
votes
1
answer
489
views
Running Scala function from command line
I'm working on an exercise. I need to create a java project that can be run from the scala command line. The final output should be this:
scala> int2str(6)
res0: String = six
scala> int2str(65)
...
-1
votes
1
answer
45
views
Why value of y and +y is same in scala REPL in below scenario
scala> val y=20
val y: Int = 20
scala> y
val res0: Int = 20
scala> +y
val res1: Int = 20
-1
votes
3
answers
91
views
Return only value without function name in Scala
I am new to Scala. I am trying to return a value from some scala code in Spark and I also get the function name along with the result. for ex executing below
def getHistory() : Long = {
1 + 1
}
...
- 672
1
vote
1
answer
331
views
Easiest way to access ZIO test generators from Scala REPL?
I'm just starting out using ZIO in Scala. I've written some Scalacheck-style tests using ZIO's Gen type, and they appear to work, but I'd like to manually test the generators in the REPL to ensure ...
- 551
0
votes
0
answers
97
views
Scala REPL shows nothing when I type functions
When I type functions in Scala REPL in IntilliJ it shows nothing while it supposed to show return value (I think)
here is a function I use to calculate grades then decides whether it's bigger than ...
0
votes
1
answer
637
views
Scala REPL. First it says "illegal start of definition", then "error: not found: type" when I try it a different way
Sorry guys - I know these questions get asked a lot on the Scala forum, but I've tried following posts on here and I've run into a roadblock either way, so I'd be really grateful for any help from ...
- 37
0
votes
0
answers
41
views
Why Scala in REPL (or worksheet) and Scala in IDE don't work the same? [duplicate]
I'm a beginner learning Scala. I was referring to the Scala documentation.
The documentation says:
The REPL isn’t 100% the same as working with source code in an IDE, so
there are a few things you ...
- 150