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// Fixes #3422
object Test {
def main(args: Array[String]): Unit = {
val arr = Array.range(0,10)
val map = arr groupBy (_%2)
val v1 = map(0)
val v2 = map(0)
// this should hold, of course, assuming also that group by returns a regular
// map implementation, and does nothing fancy - and it should return just a
// hash map by default.
assert(v1 eq v2)
}
}
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