Add a variant unfoldrExactN, returning the resulting generator
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
Research direction
Start from the requested unfoldrExactN_ signature and compare it with the vector package's existing unfold APIs; the issue does not name implementation files or tests. Clarify the API and semantics for returning the final generator state, then add coverage showing that both the Vector result and resulting b are correct.
Written by the indexing model from the issue text.
Description
I have a job for
unfoldrExactN_ :: Int -> (b -> (a, b)) -> b -> (Vector a, b)
but it is surprisingly difficult to emulate: the best I managed to do was put b into State and use replicateM.
How do you feel about extending vector with such function?
- Dominant language
- Haskell
- Stars
- 401
- Forks
- 145
- PR merge metrics
- No merged PRs in 30d
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