Perl::...erators(3pm)

okay so this is the Perl::...erators(3pm) page from User Contributed Perl Documentation, and the actual policy name is Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators. buckle up bestie, it’s giving “operator vibes check” 💅✨

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🌸 NAME 🌸

Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators — Don't mix numeric operators with string operands, or vice-versa. periodt.

🫶 AFFILIATION 🫶

This Policy is part of the core Perl::Critic distribution. iconic behavior, honestly 🎀

💖 DESCRIPTION 💖

Using the wrong operator type for a value can obscure coding intent and possibly lead to subtle errors. An example of this is mixing a string equality operator with a numeric value, or vice-versa. like, look at this:

    if ($foo == 'bar') {}     #not ok
    if ($foo eq 'bar') {}     #ok
    if ($foo eq 123) {}       #not ok
    if ($foo == 123) {}       #ok

highkey the comments are doing all the talking here 😭💀

🧚 CONFIGURATION 🧚

This Policy is not configurable except for the standard options. that’s it, bestie — no secret extra knobs 🫶

🎀 NOTES 🎀

If warnings are enabled, the Perl interpreter usually warns you about using mismatched operators at run-time. This Policy does essentially the same thing, but at author-time. That way, you can find out about them sooner. early detection is self-care ✨

Perl handles the strings 'NaN' and 'inf' as special numbers and creates an NV struct when compared with a numeric operator. Although not necessary it is allowed to write code such as:

my $i = 'inf'+0;

This pattern helps others understand that the variable is indeed the Infinite or NaN numbers as Perl interprets them. Only these two special string numbers are allowed to have the '+' operator which would otherwise be allowed only for strings. iykyk 👑

✨ AUTHOR ✨

Peter Guzis <pguzis@cpan.org> — thank you for your service 🫡💖

📜 COPYRIGHT 📜

Copyright (c) 2006-2023 Peter Guzis. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module.

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mwah 💋 that’s the whole page, bestie — source/version: perl v5.42.0, date: 2024-10-23, manual: Perl::...erators(3pm). slay and goodbye 🦋🌈