https://dev.dsp-wiki.com/Template:If_empty/doc/history?feed=atom 2026-05-05T08:59:12Z Revision history for this page on the wiki MediaWiki 1.43.5 https://dev.dsp-wiki.com/index.php?title=Template:If_empty/doc&diff=16794&oldid=prev 2024-03-24T11:54:41Z

<p>1 revision imported: New Files</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <tr class="diff-title" lang="en"> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:54, 24 March 2024</td> </tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

Antt1995 https://dev.dsp-wiki.com/index.php?title=Template:If_empty/doc&diff=16790&oldid=prev 2023-05-24T05:39:09Z

<p>Created page with &quot;{{Documentation}} {{Wikipedia template}} This template is used inside other templates. It takes any number of parameters and returns the first found to be defined and non-empty. If none is found, nothing is returned. By writing &lt;code&gt;&lt;nowiki&gt;{{if empty|a|b|c}}&lt;/nowiki&gt;&lt;/code&gt; instead of &lt;code&gt;&lt;nowiki&gt;{{#if:a|a|{{#if:b|b|c}}}}&lt;/nowiki&gt;&lt;/code&gt;, expression a and b do not have to be repeated and evaluated twice. The template provides a fallback order, similar to a try catch...&quot;</p> <p><b>New page</b></p><div>{{Documentation}}<br /> {{Wikipedia template}}<br /> <br /> This template is used inside other templates. It takes any number of parameters and returns the first found to be defined and non-empty. If none is found, nothing is returned. By writing &lt;code&gt;&lt;nowiki&gt;{{if empty|a|b|c}}&lt;/nowiki&gt;&lt;/code&gt; instead of &lt;code&gt;&lt;nowiki&gt;{{#if:a|a|{{#if:b|b|c}}}}&lt;/nowiki&gt;&lt;/code&gt;, expression a and b do not have to be repeated and evaluated twice. The template provides a fallback order, similar to a try catch based &quot;It is easier to ask for forgiveness than permission&quot; (EAFP) programming style.<br /> <br /> Typical usage is like this:<br /> : &lt;code&gt;&lt;nowiki&gt;{{If empty |{{{logo|}}} |{{{image|}}} |{{{picture|}}} |default.svg}}&lt;/nowiki&gt;&lt;/code&gt;<br /> : &lt;nowiki&gt;(&quot;Return {{{logo|}}} if it has a value; else {{{image|}}} if it has a value; else {{{picture|}}} if it has a value; else return &quot;default.svg&quot;.&quot;)&lt;/nowiki&gt;<br /> This returns the first of the parameters &#039;&#039;logo&#039;&#039;, &#039;&#039;image&#039;&#039; and &#039;&#039;picture&#039;&#039; that is defined and non-empty, otherwise &quot;default.svg&quot;.<br /> <br /> &lt;includeonly&gt;[[Category:Formatting and function templates]]&lt;/includeonly&gt;</div>

Antt1995