| [#1074] | project: api | priority: medium | category: bug | |
|---|---|---|---|---|
| submitter | assigned to | status | date submitted | |
| Nikolay | Martin | fixed | 2007-05-01 12:38:40.0 | |
| subject | [contrib #445] HashSet.filter is broken | |||
| code |
object SetBug {
def main(args : Array[String]) : Unit = {
var words = "a" :: "b" :: "cd" :: "de" :: "fg" :: "ef" ::
"gh" :: "jk" :: "hj" :: "kl" :: "lm" :: "mn" :: Nil
val q0:Set[String] =
new scala.collection.immutable.HashSet[String]() ++ words
Console.println("q0 = " + q0)
Console.println("q1 = " + q0.filter(w => false))
Console.println("q2 = " + q0.filter(w => false).filter(w => false))
}
} |
|||
| what happened | Here's the output: q0 = HashSet$$anon$0(kl, jk, cd, fg, a, ef, gh, de, hj, b, lm, mn) q1 = HashSet$$anon$0(fg, gh) q2 = HashSet$$anon$0() |
|||
| what expected | I would expect that filter with a predicate which always returns false will always return the empty set. Somehow, it doesn't. | |||
| [back to overview] | ||||
| Nikolay edited on 2007-05-01 12:39:17.0 |
| contribution #445 |
| Martin edited on 2007-05-10 19:21:50.0 |