typelevel / typelevel/cats

Add `attemptOption` to Alternative

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#2,936 6 comments 0 reactions 0 assignees View on GitHub

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help wanted low-hanging fruit
Dominant language
Scala
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Avg merge
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Description

def attemptOption[A](fa: F[A]): F[Option[A]] =
  fa.map(_.some) <+> Option.empty[A].pure[F]

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the Alternative entry point and reading its existing combinators to understand the surrounding API and typeclass assumptions. Check the relevant Alternative tests or test suite, then confirm that the new operation is exposed consistently and behaves as described for successful and empty alternatives.

Written by the indexing model from the issue text.

Assessment

Tech stack
scala
Domain
backend-api-design
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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