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finding unreachable case clause on huge enum blows up compile time even it does not have guard clause

#12873

· KisaragiEffective opened

on Sep 17, 2023

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Shrinkable#subtractAll on non-Set/-Map types has abysmal performance

library:collections

#12179

· NthPortal opened

on Oct 5, 2020

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Champ (Map/Set) Iterators should expose their knownSize

library:collections

#11606

· joshlemer opened

on Jul 2, 2019

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Consider using of tzcnt instruction for better performance in foreach loop and iterator of bitsets

library:collections

#11418

· plokhotnyuk opened

on Feb 27, 2019

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Optimise immutable.Queue for head/tail

library:collections

#11396

· NthPortal opened

on Feb 9, 2019

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2.12 performance regression from ArrayOps allocations on vectors/seqs

library:collections

#11304

· twenovales opened

on Dec 11, 2018

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Create new trait MapBuilder extending Builder, which adds non-allocating addOne method

library:collections

#11297

· joshlemer opened

on Dec 9, 2018

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s.c.m.Shrinkable#subtractAll could return early once <code>this</code> is known to be empty.

library:collections

#11269

· joshlemer opened

on Nov 22, 2018

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Compiler gets stuck in GC while SubstSym

fixed in Scala 3

#11249

· lrytz opened

on Nov 12, 2018

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Investigate potential alternative data structures for <code>s.c.i.HashCollision{Map,Set}Node</code>

library:collections

#11164

· joshlemer opened

on Sep 20, 2018

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reduce ScalaRunTime array type checking

#10968

· isaacl opened

on Jul 2, 2018

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A reflective call is generated while no reflective call warning is shown

#10666

· Atry opened

on Dec 21, 2017

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