# Template:Ifnotempty/doc

From The Kodiak Republic Wiki

This is a documentation subpage for Template:Ifnotempty.It contains usage information, categories and other content that is not part of the original page. |

This template is used on many pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them. |

With this template #if can be used in a way such that it does not strip spaces and newlines from the "then" and "else" part. For evaluating the condition spaces and newlines are stripped like with ParserFunctions.

This template can be substituted.

## Usage

`{{ifnotempty| x | A | B }}`

gives " A "`{{ifnotempty|x| A | B }}`

gives " A "`{{ifnotempty| | A | B }}`

gives " B "`{{ifnotempty|| A | B }}`

gives " B "

Compare:

`{{#if:x| A | B }}`

gives "A"`{{#if:| A | B }}`

gives "B"

## Internal technical details

For evaluating the condition (determining non-emptiness of the first parameter) the template uses parser function #if, producing 1 if the condition is true, and 2 otherwise. The template with name equal to "P" followed by the index value produced (hence Template:P1 or Template:P2), is called with as parameters A and B. This produces either A or B, without trimming. The template's code is a substitution-safe version of

```
{{ {{#if: {{{1}}} | P1 | P2 }} |{{{2}}}|{{{3}}}}}
```

## See also