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Add insertion functions

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#76 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
38/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
haskell
Domain
data

Research direction

Start by reviewing the three requested function signatures and the linked StackOverflow answer, then inspect the existing Haskell Vector API to identify the relevant implementation entry points. Done means the three insertion functions are provided with the requested types and behavior, including the simple insertAt case.

Written by the indexing model from the issue text.

Description

design-shed enhancement

I doubt these are needed too terribly often, but it might make sense to add them anyway—the usual Vector API doesn't seem to offer any way to implement them efficiently.

  1. insertBeforeFirst :: (a -> Bool) -> a -> Vector a -> Vector a
  2. insertAfterLast :: (a -> Bool) -> a -> Vector a -> Vector a
  3. insertAt :: Int -> a -> Vector a -> Vector a

I've written two fusing versions of (essentially) insertBeforeFirst in an answer on StackOverflow; insertAt should be particularly simple.

Dominant language
Haskell
Stars
401
Forks
145
No merged PRs in 30d

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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