realm / realm/SwiftLint

Prefer function as a parameter instead of simple trailing closure

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#929 4 comments 0 reactions 0 assignees View on GitHub

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rule-request
Dominant language
Swift
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Description

This is an exception to https://github.com/realm/SwiftLint/issues/54.

If the trailing closure is simple then prefer

result.map(stripTrailingWhitespace)

instead of

result.map { stripTrailingWhitespace($0) }

reference:
https://github.com/exercism/xswift/pull/209#discussion_r90971304

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 with the Swift examples in the issue and review the linked Exercism discussion for the intended preference and exception. Trace how SwiftLint represents and checks closure style, then add coverage showing that a simple trailing closure prefers the function reference and verify that more complex closures remain unaffected.

Written by the indexing model from the issue text.

Assessment

Tech stack
swift
Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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