Caleb Cooper at 19:11, 24 October 2020

2020-10-24T19:11:45Z

← Older revision		Revision as of 19:11, 24 October 2020
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	It is useful for programming advanced templates, and is often used within a template to the right of an equals sign. It may also be used in a template to disambiguate parsing of braces.		It is useful for programming advanced templates, and is often used within a template to the right of an equals sign. It may also be used in a template to disambiguate parsing of braces.

	It can also be used to temporarily disable code. Unlike "[[commenting out]]" with <code><nowiki><!-- --></nowiki></code>, it nests. This means that <code><nowiki>{{void\|foo {{void\|bar}} baz}}</nowiki></code> is valid, whereas <code><nowiki><!-- foo <!-- bar --> baz --></nowiki></code> will produce <code><!-- foo <!-- bar --> baz --></code>.		It can also be used to temporarily disable code. Unlike "[[Wikipedia:commenting out\|commenting out]]" with <code><nowiki><!-- --></nowiki></code>, it nests. This means that <code><nowiki>{{void\|foo {{void\|bar}} baz}}</nowiki></code> is valid, whereas <code><nowiki><!-- foo <!-- bar --> baz --></nowiki></code> will produce <code><!-- foo <!-- bar --> baz --></code>.

	It provides a particularly concise way of temporarily disabling ''templates'', by prefixing the template name with <code>^\|</code>, making the template name becomes the (ignored) first unnamed parameter. For example, suppose you have a page {{tlx\|Under construction}} for several days, and wish to change that to {{tlx\|In use}} during active editing sessions. Rather than delete the unused template, you can leave both templates in the wikisource and change from <code><nowiki>{{^\|In use\|...}}{{Under construction\|...}}</nowiki></code> to <code><nowiki>{{In use\|...}}{{^\|Under construction\|...}}</nowiki></code>.		It provides a particularly concise way of temporarily disabling ''templates'', by prefixing the template name with <code>^\|</code>, making the template name becomes the (ignored) first unnamed parameter. For example, suppose you have a page {{tlx\|Under construction}} for several days, and wish to change that to {{tlx\|In use}} during active editing sessions. Rather than delete the unused template, you can leave both templates in the wikisource and change from <code><nowiki>{{^\|In use\|...}}{{Under construction\|...}}</nowiki></code> to <code><nowiki>{{In use\|...}}{{^\|Under construction\|...}}</nowiki></code>.
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	==Alternatives==		==Alternatives==
	{{Tl\|Null}} also redirects here. It is also possible to use <code><nowiki>{{ns:0}}</nowiki></code>, the empty/void/null string for the main [[m:Help:Namespace\|namespace]].		{{Tl\|Null}} also redirects here. It is also possible to use <code><nowiki>{{ns:0}}</nowiki></code>, the empty/void/null string for the main [[mediawikiwiki:Help:Namespace\|namespace]].

	It can be used in place of <code><nowiki><nowiki/></nowiki></code> to break character sequence parsing, for example <code><nowiki>{{nowrap\|{''a''}{{null}}}}</nowiki></code> to force the first closing brace to be treated as part of the template parameter instead of as the end of the template expression.		It can be used in place of <code><nowiki><nowiki/></nowiki></code> to break character sequence parsing, for example <code><nowiki>{{nowrap\|{''a''}{{null}}}}</nowiki></code> to force the first closing brace to be treated as part of the template parameter instead of as the end of the template expression.

Caleb Cooper: Created page with "{{Documentation subpage}} {{Template shortcut|^|Nul|Null}} {{High-use}} {{Commons Import}} This template does nothing visually. Technically, it throws away its parameters and..."

2020-10-24T19:09:53Z

Created page with "{{Documentation subpage}} {{Template shortcut|^|Nul|Null}} {{High-use}} {{Commons Import}} This template does nothing visually. Technically, it throws away its parameters and..."

New page

{{Documentation subpage}}
{{Template shortcut|^|Nul|Null}}
{{High-use}}
{{Commons Import}}
This template does nothing visually. Technically, it throws away its parameters and outputs the null string.

It is useful for programming advanced templates, and is often used within a template to the right of an equals sign. It may also be used in a template to disambiguate parsing of braces.

It can also be used to temporarily disable code. Unlike "[[commenting out]]" with <code><nowiki></nowiki></code>, it nests. This means that <code><nowiki>{{void|foo {{void|bar}} baz}}</nowiki></code> is valid, whereas <code><nowiki> baz --></nowiki></code> will produce <code> baz --></code>.

It provides a particularly concise way of temporarily disabling ''templates'', by prefixing the template name with <code>^|</code>, making the template name becomes the (ignored) first unnamed parameter. For example, suppose you have a page {{tlx|Under construction}} for several days, and wish to change that to {{tlx|In use}} during active editing sessions. Rather than delete the unused template, you can leave both templates in the wikisource and change from <code><nowiki>{{^|In use|...}}{{Under construction|...}}</nowiki></code> to <code><nowiki>{{In use|...}}{{^|Under construction|...}}</nowiki></code>.

Another possible application would be to temporarily disable an infobox on an article page while a problem with the infobox template itself is resolved.

A deeper no-op is <code><nowiki>{{subst:void|foobar}}</nowiki></code> or <code><nowiki>{{subst:^|foobar}}</nowiki></code>. It disappears completely upon saving.

==Alternatives==
{{Tl|Null}} also redirects here. It is also possible to use <code><nowiki>{{ns:0}}</nowiki></code>, the empty/void/null string for the main [[m:Help:Namespace|namespace]].

It can be used in place of <code><nowiki><nowiki/></nowiki></code> to break character sequence parsing, for example <code><nowiki>{{nowrap|{''a''}{{null}}}}</nowiki></code> to force the first closing brace to be treated as part of the template parameter instead of as the end of the template expression.

==TemplateData==
{{TemplateData header}}
<TemplateData>{"description":"A template to show the null string, i.e. nothing. Any parameters are accepted and ignored.","params":{}}</TemplateData>

==See also==
* [[Template:Nothing]] - a template that displays an invisible HTML tag
* [[Template:Text]] - a template that just displays its first parameter unchanged.

<includeonly>{{Sandbox other||
[[Category:Wikipedia formatting and function templates]]
[[Category:Templates with no visible output]]
}}</includeonly>

Template:Void/doc - Revision history

Caleb Cooper at 19:11, 24 October 2020

Caleb Cooper: Created page with "{{Documentation subpage}} {{Template shortcut|^|Nul|Null}} {{High-use}} {{Commons Import}} This template does nothing visually. Technically, it throws away its parameters and..."