add `indexedFilterMap`
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 45/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- elm
- Domain
- data
Research direction
Start by locating the existing Array.indexedMap and Array.filterMap implementations and their related tests, then compare their behavior with the requested indexedFilterMap signature. Done means the indexed filtering operation is available as described and its behavior is covered by tests, including the findAll-style example.
Written by the indexing model from the issue text.
Description
Implement indexedFilterMap : (Int -> a -> Maybe b) -> ... as a more performant and convenient alternative to
Array.indexedMap Tuple.pair
|> Array.filterMap (\( i, el ) -> ...)
a "findAll" would then be trivial
Array.filterMapIndexed (\i el -> ...)
Related: https://github.com/elm-community/array-extra/issues/12
- Dominant language
- Elm
- Stars
- 10
- Forks
- 9
- PR merge metrics
- No merged PRs in 30d
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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