This page is currently inactive and is retained for historical reference.
This template was replaced by ((#if)), which should be used instead. Its original code is below.

(({else(({test|))}|(({test(({test|))}|(({then|))))))))}

Template documentation[view] [edit] [history] [purge]

This template may have no transclusions, because it is substituted by a tool or script, it is used as part of a short-term or less active Wikipedia process, or for some other reason.

Template:Qif formerly implemented an "if" function, which is now implemented by the parser function ((#if)).

Purpose and function[edit]

Provides if then else functionality.

Parameter else is optional.
This template has undefined behaviour, if parameter test or then (or both) are missing.
This template also has undefined behaviour, if any parameter (be it named or unnamed) that is different from test, then or else is defined when calling the template.

Note that ((qif)) does not work when subst'ed (like ((ifndef)), the then part alone as in ((ifdef)) can be substituted).

Of course it's impossible to use vertical bars in parameter values directly, use either | or Template:! - the latter is only relevant for wiki table delimiters.

Wikipedia CTO Brion Vibber expressed support to implement the functionality of qif into MediaWiki; this became ((#if)).

Usage[edit]

((Qif
  |test=VARIABLE_OR_PARAMETER_TO_TEST
  |then=code if 'test' is not empty
  |else=code if 'test' is empty
))

Parameter else is optional. So this was also possible:

((Qif
  |test=VARIABLE_OR_PARAMETER_TO_TEST
  |then=code if 'test' is not empty
))

Examples[edit]

Code	Result
((Qif \|test=((boolne\|foo\|bar)) \|then=true \|else=false ))	true
((Qif \|test=((booleq\|foo\|bar)) \|then=true \|else=false ))	false
((Qif \|test= \|then=bar ))
((Qif \|test=foo \|then=bar ))	bar

Purpose and function[edit]

Usage[edit]

Examples[edit]

See also[edit]