Issues

• Why is UnorderedTraverseForHashMap requiring a Hash constraint

  typelevel/cats-collections#821 · Filter by author loladenney opened on May 15, 2026

• a faster immutable stack/list

  typelevel/cats-collections#634 · Filter by author johnynek opened on Sep 12, 2023
  15

  

• Inconsistent Range behavior when dealing with reverse ranges

  bug
  typelevel/cats-collections#564 · Filter by author isomarcte opened on Nov 15, 2022
  19

• Add CHAMP HashMap and HashSet to microsite

  good-first-issue
  typelevel/cats-collections#537 · Filter by author gemelen opened on Aug 22, 2022
  5

• Get benchmarks compiling on Scala 3

  typelevel/cats-collections#487 · Filter by author armanbilge opened on Jan 23, 2022

• Fix the warnings and enable fatal warnings in CI

  good-first-issue
  typelevel/cats-collections#486 · Filter by author armanbilge opened on Jan 23, 2022 · 1.0
  6

• Bring back code coverage per PR

  housekeeping
  typelevel/cats-collections#444 · Filter by author gemelen opened on Oct 16, 2021
  2

• remove Discrete typeclass in favor of one of the cats Enumerable typeclasses

  help wantedlsug
  typelevel/cats-collections#315 · Filter by author johnynek opened on Sep 11, 2020 · 1.0
  6

• 1.0

  typelevel/cats-collections#277 · Filter by author larsrh opened on Feb 2, 2020 · 1.0
  11

• Clean up Predicate

  typelevel/cats-collections#202 · Filter by author larsrh opened on Jun 18, 2019 · Backlog

• A purely functional Set implementation using Eq

  typelevel/cats-collections#142 · Filter by author nasadorian opened on Nov 4, 2018 · Backlog
  6

• Port scalaz Tree and TreeLoc

  typelevel/cats-collections#92 · Filter by author i-am-the-slime opened on Apr 29, 2017 · Backlog
  3

• DietMap

  typelevel/cats-collections#66 · Filter by author velvia opened on Oct 26, 2016 · Backlog
  8

• convert Diet into a balanced tree.

  typelevel/cats-collections#20 · Filter by author anicolaspp opened on Feb 16, 2016 · Backlog
  2

  

• we desperately need to publish benchmarks

  enhancement
  typelevel/cats-collections#14 · Filter by author stew opened on Feb 7, 2016 · Backlog
  6