[ScalaCLPlugin] ClassCastException when using map with breakOut

[ochafik]

What steps will reproduce the problem?

Run the following code:

object Test2 {
def main(args: Array[String]) {
val a: Set[Int] = List(1).map(_ + 1)(collection.breakOut)
println(a)
}
}

What is the expected output? What do you see instead?

Set(2), but instead we get:

Exception in thread "main" java.lang.ClassCastException: scala.collection.immutable.$colon$colon cannot be cast to scala.collection.immutable.Set
at test1.Test2$.main(tests.scala:10)
at test1.Test2.main(tests.scala)

What version of the product are you using? On what operating system?

0.2 SNAPSHOT from today.

Google Code Info:
Issue #: 43
Author: ismaelj
Created On: 2011-01-17T22:53:29.000Z
Closed On: 2011-01-18T13:49:41.000Z

[ochafik]

Oops, I forgot to add the title, but I can't edit the issue. Please add 'ClassCastException when using map with breakOut'

Google Code Info:
Author: ismaelj
Created On: 2011-01-17T22:54:08.000Z

[ochafik]

Excellent, thanks a lot Ismael ! (happy to have learnt a new toy in the process, breakOut looks very useful :-))

Btw, ScalaCL also works in the console (as hinted by the reporter of issue #40 and #41) :

SCALACL_VERBOSE=1 scala

val a: Set[Int] = List(1).map(_ + 1)(collection.breakOut)

Cheers

Google Code Info:
Author: olivier.chafik
Created On: 2011-01-17T23:03:00.000Z

[ochafik]

Useful to know (about console). :)

Google Code Info:
Author: ismaelj
Created On: 2011-01-17T23:12:12.000Z

[ochafik]

Fixed by revision #1580 in version 0.2.Beta6 (sbaz) and latest Maven 0.2-SNAPSHOT.

The fix only tries to stay away from exotic CanBuildFroms, but a clean fix will wait for the upcoming version 0.3 where operation streams are planned (a.map(f1).filter(f2).map(f3).toSet or ....map(f3)(collection.breakOut) will hence be treated the same way).

Thanks again for your report,

Cheers

Olivier

Google Code Info:
Author: olivier.chafik
Created On: 2011-01-18T13:49:32.000Z

[ochafik]

Google Code Info:
Author: olivier.chafik
Created On: 2011-01-18T13:49:41.000Z

[ochafik]

Thanks!

Google Code Info:
Author: ismaelj
Created On: 2011-01-18T13:54:19.000Z

[ochafik]

I tested the current snapshot in my project and all tests pass. :)

Google Code Info:
Author: ismaelj
Created On: 2011-01-18T19:48:06.000Z