Perl::...kNames(3pm)

hey bestie 💖 this is Perl::...kNames(3pm) from the User Contributed Perl Documentation, and it’s here to save you from a truly iconic typo.

💅 NAME 💅

Perl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames — don’t use labels that are the same as the special block names. periodt.

🫶 AFFILIATION 🫶

This Policy is part of the core Perl::Critic distribution. no cap.

✨ DESCRIPTION ✨

okay so when you’re using one of the special Perl blocks — BEGIN, END, CHECK, INIT, and UNITCHECK — it is easy to mistakenly add a colon to the end of the block name. literally so easy. E.g.:

# a BEGIN block that gets executed at compile time.
BEGIN { <...code...> }

# an ordinary labeled block that gets executed at run time.
BEGIN: { <...code...> }

The labels BEGIN:, END:, etc. are probably errors. 🚨 This policy prohibits the special Perl block names from being used as labels. periodt.

🎀 CONFIGURATION 🎀

This Policy is not configurable except for the standard options. that’s it, bestie 💅.

🌈 SEE ALSO 🌈

The Perl Buzz article on this issue at http://perlbuzz.com/2008/05/colons-invalidate-your-begin-and-end-blocks.html. iykyk.

💖 ACKNOWLEDGMENT 💖

Randy Lauen for identifying the problem. 🫶

👑 AUTHOR 👑

Mike O’Regan. 👑

🦋 COPYRIGHT 🦋

Copyright (c) 2008-2011 Mike O’Regan. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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later bestie, and remember: this page is perl v5.42.0, dated 2024-10-23, and its manual name is Perl::...kNames(3pm). 💖✨