Perl::...Blocks(3pm)

🎀 Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks 💅

okay so bestie, this one's a Perl::Critic policy page — from the Perl::...Blocks(3pm) manual, which is literally just the truncated name of the policy itself. slay. let's get into it ✨

---

✨ NAME ✨

Perl::Critic::Policy::ControlStructures::ProhibitUntilBlocks — the policy that says: write "while(! $condition)" instead of "until($condition)".

like, that's the whole vibe. no cap. 🫶

---

🌸 AFFILIATION 🌸

This Policy is part of the core Perl::Critic distribution. it comes pre-installed with the whole thing, iconic behavior honestly 👑

---

💖 DESCRIPTION 💖

so Conway — yes, that Conway — discourages using until because it leads to double-negatives that are hard to understand. and like… he's right, bestie. double negatives are giving "not not un-true" energy and nobody has the brain cells for that on a Tuesday 😭

instead, you reverse the logic and use while. flip it. periodt.

until($condition)     { do_something() } #not ok
until(! $no_flag)     { do_something() } #really bad
while( ! $condition)  { do_something() } #ok

look at that second one. look at it. until(! $no_flag)?? that's #really bad, bestie, the manpage said it, not me 💀

heads up: this Policy only covers the block-form of until. for the postfix variety, go see "ProhibitPostfixControls".

iykyk 🦋

---

🧚 CONFIGURATION 🧚

This Policy is not configurable except for the standard options. that's it. that's the section. no levers to pull, no knobs to turn, just the standard options and vibes 🌈

---

⭐ SEE ALSO ⭐

• Perl::Critic::Policy::ControlStructures::ProhibitPostfixControls — the postfix-flavored sibling. go say hi 👋

---

💜 AUTHOR 💜

Jeffrey Ryan Thalhammer <jeff@imaginative-software.com> — thank you for your service, king 🫡👑

---

🔥 COPYRIGHT 🔥

Copyright (c) 2005-2011 Imaginative Software Systems. 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.

like, legally iconic. 💅

---

okay that's the whole page, you ate that, go forth and never write until again 🎀✨

signing off from the perl v5.42.0 manual, dated 2024-10-23, Perl::...Blocks(3pm) — mwah 💋