typelevel / typelevel/cats

Add withFilter to FunctorFilter.Ops

Open
#4,709 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Scala
Stars
5.5k
Forks
1.2k
Avg merge
2d 10h
Merged PRs (30d)
5

Description

So for-comprehension with if clauses compiles.

for {
  n <- Try(Seq(1, 2, 3)).nested if n % 2 == 0
} yield n

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 at FunctorFilter.Ops and trace the operations used by the shown for-comprehension with an if clause. Use the Try(Seq(1, 2, 3)).nested example as the acceptance case; done means the comprehension compiles with the requested filtering operation.

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
38/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.