fsprojects/FSharpPlus

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Extensions for F#

Stars: 941
Forks: 106
Open beginner issues: 0
Indexed issues: 54

Dominant language: F#
License: Apache-2.0
Last GitHub push: Aug 12, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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54 open issues indexed

[API Proposal]: Collections: Add useful inverses Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

fsprojects/FSharpPlus#683 · 1 comment · 2 reactions · Opened Sep 16, 2026
Task cancellation drops original task reference Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#678 · Opened Aug 11, 2026
[API Proposal]: DateTime/DateTimeOffset format Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

fsprojects/FSharpPlus#644 · Opened Jul 10, 2025
NonEmptySeq et.c. should use same mechanism for extension as other external implementations Open

breaking change F#+ v2.0

Difficulty 4/5 3-5 days Newbie friendliness 30/100

fsprojects/FSharpPlus#643 · Opened Jun 30, 2025
lens type signature Open

breaking change F#+ v2.0

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#641 · Opened Jun 30, 2025
[API Proposal]: Extend the reduce and reduceBack to Collections Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#625 · 41 comments · 1 reaction · Opened Jun 7, 2025
[Feature]: concat function Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

fsprojects/FSharpPlus#621 · 1 comment · Opened Jun 2, 2025
F# Regressions affecting F#+ Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

fsprojects/FSharpPlus#613 · 9 comments · 1 reaction · Opened Jan 30, 2025
Adjust async/task/value task tests to work on net6 and on release branch Open

F#+ v1.1

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#598 · Opened Feb 13, 2024
net45 not compatible with updated F# typeprovider Open

F#+ v1.1

Difficulty 4/5 3-5 days Newbie friendliness 25/100

fsprojects/FSharpPlus#587 · Opened Jan 28, 2024
Drop net45, net6, Fable3 from F#+ 2 release Open

breaking change F#+ v2.0

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#578 · 1 comment · Opened Dec 18, 2023
Clean up preprocessor directives Open

F#+ v2.0

fsprojects/FSharpPlus#577 · 1 assignee · Opened Dec 17, 2023
Int32.TryParse and F#+ tryParse give different results Open

bug F#+ v2.0

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#541 · 6 comments · Opened Mar 27, 2023
Upload packages built on main branch onto GitHub NuGet feed Open

enhancement fix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

fsprojects/FSharpPlus#540 · Opened Mar 21, 2023
Proposal: A set of modules for list and tree zippers Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#538 · 1 comment · Opened Mar 5, 2023
Traverse Lens Documentation Needs more Examples Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#533 · 1 comment · Opened Feb 19, 2023
Array.replace takes in seq for its two first values instead of arrays Open

breaking change F#+ v1.1 F#+ v2.0

Difficulty 3/5 1-2 days Newbie friendliness 45/100

fsprojects/FSharpPlus#514 · Opened Nov 13, 2022
New Validation type Open

enhancement F#+ v2.0

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#499 · 2 comments · 4 reactions · Opened Sep 7, 2022
Validation.ofResult doesn't require Semigroup Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

fsprojects/FSharpPlus#496 · Opened Sep 6, 2022
GitHub Action to release docs Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

fsprojects/FSharpPlus#493 · 1 reaction · Opened Sep 4, 2022
Juxt Open

enhancement RFC

Difficulty 3/5 1-2 days Newbie friendliness 38/100

fsprojects/FSharpPlus#486 · 9 comments · Opened Aug 4, 2022
Groups should be NonEmptySeqs Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#480 · Opened May 30, 2022
Stopwatch: measure function execution time Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

fsprojects/FSharpPlus#470 · 7 comments · Opened Oct 19, 2021
Is it possible to add concrete implementation of monad for IObservable<'a> ? Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 30/100

fsprojects/FSharpPlus#459 · 1 comment · 1 reaction · Opened Jul 10, 2021
toSeq defaults Open

enhancement F#+ v2.0 fix

Difficulty 4/5 3-5 days Newbie friendliness 35/100

fsprojects/FSharpPlus#449 · 2 comments · Opened Jun 4, 2021
Scan padding and length specifiers properly Open

enhancement fix

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#441 · 1 comment · Opened May 16, 2021
Free monad with trampoline Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

fsprojects/FSharpPlus#437 · 3 comments · 1 reaction · Opened May 2, 2021
Fable tests check annotations Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#419 · 1 comment · Opened Jan 8, 2021
Using setl and view for the same optic in one function gives error "The type Data.Identity does not match the type Data.Const" Open

documentation question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

fsprojects/FSharpPlus#344 · 23 comments · Opened Aug 28, 2020
Translate the f# + documentation into other language[s] Open

documentation enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

fsprojects/FSharpPlus#329 · 5 comments · 2 reactions · Opened Jun 16, 2020
Add alias of 'result' Open

RFC

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

fsprojects/FSharpPlus#325 · 5 comments · Opened May 21, 2020
Possible undesired seq subsumption results in KeyValuePairs Open

question RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#322 · 4 comments · Opened May 8, 2020
Roadmap V2.0 Open

F#+ v2.0

Difficulty 5/5 Over a week Newbie friendliness 15/100

fsprojects/FSharpPlus#288 · 27 comments · 4 reactions · Opened Mar 7, 2020
Synchronize Fable tools version between tests and compile Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

fsprojects/FSharpPlus#287 · 1 reaction · Opened Mar 6, 2020
Validation shouldn't have Empty Open

bug F#+ v2.0

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#267 · 1 comment · Opened Feb 6, 2020
Building and testing with RFCs FS-1043 FS-1071 Open

discussion

Difficulty 5/5 Over a week Newbie friendliness 20/100

fsprojects/FSharpPlus#261 · 19 comments · 7 reactions · Opened Jan 30, 2020
Currying error on the wrong side Open

discussion F#+ v2.0 RFC urgent

Difficulty 5/5 Over a week Newbie friendliness 20/100

fsprojects/FSharpPlus#245 · 19 comments · Opened Jan 21, 2020
Improve docs Open

documentation

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#239 · 23 comments · 3 reactions · Opened Jan 16, 2020
Question: type provider to generate lenses Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#200 · 2 comments · Opened Sep 22, 2019
Add functions for Nullable<_> Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#191 · 5 comments · 2 reactions · Opened Aug 26, 2019
Add `traverse_` Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#188 · 2 comments · 2 reactions · Opened Aug 21, 2019
Add more string functions - StringBuilder extension Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

fsprojects/FSharpPlus#166 · 5 comments · Opened Jul 29, 2019
Add more string functions - culture-sensitive functions Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#165 · 4 comments · Opened Jul 29, 2019
Revisit Computation Expressions design Open

discussion RFC

Difficulty 5/5 Over a week Newbie friendliness 20/100

fsprojects/FSharpPlus#140 · 10 comments · Opened Nov 1, 2018
Monomorphic functors Open

enhancement F#+ v2.0 RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#129 · Opened Sep 26, 2018
Consider adding a phantom type to Kleisli Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

fsprojects/FSharpPlus#127 · Opened Sep 18, 2018
Active Patterns Open

enhancement RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#119 · 1 comment · Opened Jun 22, 2018
Collection types Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

fsprojects/FSharpPlus#116 · 1 comment · 2 reactions · Opened May 28, 2018
MonadPlus reform proposal Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#110 · Opened May 8, 2018
Make split function bigeneric Open

discussion enhancement RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

fsprojects/FSharpPlus#102 · 2 comments · Opened Apr 3, 2018

fsprojects/FSharpPlus

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