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scala.collection.immutable.HashSet should implement subsetOf #7326

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scabug opened this issue Apr 3, 2013 · 2 comments
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scala.collection.immutable.HashSet should implement subsetOf #7326

scabug opened this issue Apr 3, 2013 · 2 comments

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@scabug
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@scabug scabug commented Apr 3, 2013

subsetOf can be implemented much more quickly for two HashSets than for two generic sets. So there should be a special case for HashSet.subsetOf when the argument is a HashSet as well.

subsetOf is one of the fundamental set operations, and it is also used by equality. So this should be as fast as possible.

@scabug
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@scabug scabug commented Apr 3, 2013

Imported From: https://issues.scala-lang.org/browse/SI-7326?orig=1
Reporter: @rklaehn
Assignee: @rklaehn
Affected Versions: 2.11.0-M2
See #6196, #6253

@scabug
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@scabug scabug commented Jan 15, 2014

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