imported>Iris Leininger: 1 Version

2013-10-23T11:24:06Z

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imported>Gregor Hagedorn am 26. November 2010 um 12:25 Uhr

2010-11-26T12:25:36Z

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{{Documentation/subpage}}
This template takes up to four parameters, returning the first one that has any content. In contrast to default values of template parameters, this method is not sensitive to the difference between undefined (Null) and empty string.

===Background===

Normally, a template parameter evaluated with a default value, such as "<nowiki>{{{parameter1 | MISSING }}}</nowiki>" will return the default value ("Missing") if not appearing in the template call, but an empty string ("") if the template call contains:

| ...
| parameter1=
| ...

=== Usage ===

<nowiki>{{First-of| {{{primary|}}} | {{{alternative|}}} | DefaultValue }}</nowiki>
<nowiki>{{First-of| | B | C }}</nowiki>
<nowiki>{{First-of|1=|2=B|3=C}}</nowiki>

Result in:

{{First-of| {{{primary|}}} | {{{alternative|}}} | DefaultValue }}
{{First-of| | B | C }}
{{First-of|1=|2=B|3=C}}

=== See also ===

[http://en.wikipedia.org/w/index.php?title=Template:Ifempty/doc&oldid=201562858 Related documentation on Wikipedia]

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imported>Iris Leininger: 1 Version

imported>Gregor Hagedorn am 26. November 2010 um 12:25 Uhr