Template:Qif/doc

This is a documentation subpage for Template:Qif.
It may contain usage information, categories and other content that is not part of the original template page.

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.

__EXPECTUNUSEDTEMPLATE__

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

Purpose and function

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 Brooke Vibber expressed support to implement the functionality of qif into MediaWiki; this became {{#if}}.

Usage

</syntaxhighlight>

Parameter else is optional. So this was also possible:

</syntaxhighlight>

Examples

Code	Result
<syntaxhighlight lang="wikitext"></syntaxhighlight>	true
<syntaxhighlight lang="wikitext"></syntaxhighlight>	false
<syntaxhighlight lang="wikitext"></syntaxhighlight>
<syntaxhighlight lang="wikitext"></syntaxhighlight>	bar

Purpose and function

Usage

Examples

See also