typelevel/cats-collections
View on GitHubData structures for pure functional programming in Scala
- Stars
- 563
- Forks
- 108
- Open beginner issues
- 0
- Indexed issues
- 15
- Avg merge
- 2d 1h
- Merged PRs (30d)
- 4
- Dominant language
- Scala
- License
- No license data
- Last GitHub push
- Sep 15, 2026
- Latest indexed
- Sep 19, 2026
- Contributing guide
- Contributing guide
- Code of conduct
- Code of conduct
- Beginner labels
- good first issue help wanted
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Difficulty 4/5 3-5 days Newbie friendliness 48/100
typelevel/cats-collections#821 ·
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typelevel/cats-collections#634 · 15 comments · 3 reactions · 1 assignee ·
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bug
Difficulty 5/5 Over a week Newbie friendliness 25/100
typelevel/cats-collections#564 · 19 comments ·
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good-first-issue
Difficulty 2/5 1-3 hours Newbie friendliness 50/100
typelevel/cats-collections#537 · 5 comments · 1 reaction ·
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Difficulty 4/5 3-5 days Newbie friendliness 25/100
typelevel/cats-collections#487 ·
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good-first-issue
Difficulty 3/5 1-2 days Newbie friendliness 38/100
typelevel/cats-collections#486 · 6 comments ·
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housekeeping
Difficulty 4/5 3-5 days Newbie friendliness 25/100
typelevel/cats-collections#444 · 2 comments ·
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help wanted lsug
Difficulty 5/5 Over a week Newbie friendliness 25/100
typelevel/cats-collections#315 · 6 comments ·
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1.0 Open
Difficulty 5/5 Over a week Newbie friendliness 20/100
typelevel/cats-collections#277 · 11 comments ·
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Clean up `Predicate` Open
Difficulty 3/5 1-2 days Newbie friendliness 30/100
typelevel/cats-collections#202 ·
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Difficulty 5/5 Over a week Newbie friendliness 25/100
typelevel/cats-collections#142 · 6 comments ·
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Difficulty 5/5 Over a week Newbie friendliness 20/100
typelevel/cats-collections#92 · 3 comments · 1 reaction ·
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DietMap Open
Difficulty 5/5 Over a week Newbie friendliness 35/100
typelevel/cats-collections#66 · 8 comments ·
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typelevel/cats-collections#20 · 2 comments · 1 assignee ·
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enhancement
Difficulty 4/5 3-5 days Newbie friendliness 30/100
typelevel/cats-collections#14 · 6 comments ·