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Marcocapelle (talk | contribs) removed Category:Anti-patterns; added Category:Computer programming using HotCat |
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{{Orphan|date=October 2022}}
A '''loop-switch sequence'''<ref name="LEVEL ">{{cite web | url=https://levelupcode.wordpress.com/avoid/loop-switch-sequences/ | title=Loop-switch sequences | publisher=LEVEL UP CODE | accessdate=11 April 2016}}</ref> (also known as the '''for-case paradigm'''<ref>[http://thedailywtf.com/Articles/The_FOR-CASE_paradigm.aspx The FOR-CASE paradigm] and [http://thedailywtf.com/Articles/Switched_on_Loops.aspx Switched on Loops] at [[The Daily WTF]]</ref> or Anti-[[Duff's Device]]) is a programming [[antipattern]] where a clear set of steps is implemented as a switch-within-a-loop. The loop-switch sequence is a specific derivative of [[spaghetti code]].▼
▲A '''loop-switch sequence'''<ref name="LEVEL ">{{cite web | url=https://levelupcode.wordpress.com/avoid/loop-switch-sequences/ | title=Loop-switch sequences | date=30 November 2013 | publisher=LEVEL UP CODE | accessdate=11 April 2016}}</ref> (also known as the '''for-case paradigm'''<ref>[http://thedailywtf.com/Articles/The_FOR-CASE_paradigm.aspx The FOR-CASE paradigm] and [http://thedailywtf.com/Articles/Switched_on_Loops.aspx Switched on Loops] at [[The Daily WTF]]</ref> or Anti-[[Duff's Device]]) is a programming [[antipattern]] where a clear set of steps is implemented as a switch-within-a-loop. The loop-switch sequence is a specific derivative of [[spaghetti code]].
It is not necessarily an [[antipattern]] to use a [[switch statement]] within a loop—it is only considered incorrect when used to model a known sequence of steps. The most common example of the correct use of a switch within a loop is an [[inversion of control]] such as an event handler. In event handler loops, the sequence of events is not known at compile-time, so the repeated switch is both necessary and correct (see [[event-driven programming]], [[event loop]] and [[event-driven finite state machine]]).
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