typelevel / typelevel/fs2

Add `Parallel` instance for Stream

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Dominant language
Scala
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Merged PRs (30d)
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Description

It should be possible to implement a Parallel instance for Stream where the parallel applicative zips streams. We should get that :)

I would like to give this a try in a few days.

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 reading the Stream API and the existing Parallel abstraction to understand how instances are defined and how parallel applicative operations are represented. Determine the expected zipping behavior for streams and identify the relevant existing tests or instance definitions. Done means Stream has a Parallel instance whose parallel applicative zips streams, with coverage for that behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
scala
Domain
stream-processing
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
30/100

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