goto: justifications

Best-known use case: break out of deeply nested for/while blocks.

  • Alternative — extract into a function and use early return instead of goto. If you need “goto: CleanUp”, then you can extract the cleanup block into a function returning the same data type and replace the goto with “return cleanup()”
  • Alternative — extract the cleanup block into a void function and replace the goto with a call to cleanup()
  • Alternative (easiest) — exit or throw exception

Sometimes none of the alternatives are easy. To refactor the code to avoid goto requires too much testing, approval and release. The code is in a critical module in production. Laser surgery is preferred — introduce goto.

 

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