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Inconsistent stream pattern matching behavior #7142

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scabug opened this issue Feb 18, 2013 · 2 comments
Closed

Inconsistent stream pattern matching behavior #7142

scabug opened this issue Feb 18, 2013 · 2 comments
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@Ichoran
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2.11.1

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@scabug
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scabug commented Feb 18, 2013 

scala> val stream = Stream.iterate(0) { x => x + 1 }
stream: scala.collection.immutable.Stream[Int] = Stream(0, ?)

scala> val head #:: tail = stream
head: Int = 0
tail: scala.collection.immutable.Stream[Int] = Stream(1, ?)

scala> val Stream(head, tail@_*) = stream
head: Int = 0
tail: Seq[Int] = Stream(1, 2, ?)

The custom extractor #:: is doing what I'd expect; the standard unapplySeq isn't.
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scabug commented Feb 18, 2013

Imported From: https://issues.scala-lang.org/browse/SI-7142?orig=1
Reporter: Dan Rosen (mergeconflict)

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scabug commented Jun 28, 2014

@Ichoran said:
Was already fixed. Not sure when; not worth the time to track it down.

@scabug scabug closed this as completed Jun 28, 2014
@scabug scabug added the quickfix label Apr 7, 2017
@scabug scabug added this to the 2.11.1 milestone Apr 7, 2017
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