Template:Is empty

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Not to be confused with Template:If empty.

Returns true if the first parameter is assigned no value. It can be useful in de-obfuscating wiki markup. It was created to facilitate adding tracking categories.

Usage

Logic

if not x then 1.

if x then <null>.

Examples

{{#if:{{is empty| }}|empty|not empty}} → empty

{{#if:{{is empty|value}}|empty|not empty}} → not empty

Without this template

{{#if: |not empty|empty}} → empty

{{#if:value|not empty|empty}} → not empty

The above documentation is transcluded from Template:Is empty/doc. (edit | history)
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