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False positive in array_init rule with prefix operators #1877

marcelofabri opened this Issue Oct 4, 2017 · 2 comments


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marcelofabri commented Oct 4, 2017

New Issue Checklist

Bug Report

$ Pods/SwiftLint/swiftlint lint --path file.swift                                         
Loading configuration from '.swiftlint.yml'
Linting Swift files at path file.swift
Linting 'file.swift' (1/1)
file.swift:1:1: warning: Array Init Violation: Prefer using Array(seq) than { $0 } to convert a sequence into an Array. (array_init)
Done linting! Found 1 violation, 0 serious in 1 file.


  • SwiftLint version (run swiftlint version to be sure)? 0.23.0
  • Installation method used (Homebrew, CocoaPods, building from source, etc)? CocoaPods
  • Paste your configuration file:
  - array_init


  • Which Xcode version are you using (check xcode-select -p)?

Xcode 9

  • Do you have a sample that shows the issue? Run echo "[string here]" | swiftlint lint --no-cache --use-stdin --enable-all-rules
    to quickly test if your example is really demonstrating the issue. If your example is more
    complex, you can use swiftlint lint --path [file here] --no-cache --enable-all-rules. { !$0 }

@marcelofabri marcelofabri added the bug label Oct 4, 2017


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ArchieR7 commented Jan 2, 2019

same as here, does anyone know how to fix this issue?


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marcelofabri commented Jan 2, 2019

@ArchieR7 feel free to send a PR fixing this! Let me know if you have any questions ☺️

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