Template:Is empty/doc

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

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