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TiddlyWiki5/editions/tw5.com/tiddlers/Procedures.tid
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created: 20221007124007426
modified: 20221007144806995
tags: Concepts Reference
title: Procedures
type: text/vnd.tiddlywiki
!! Introduction
A <<.def procedure>> is a named snippet of text. They are typically defined with the [[Pragma: \procedure]]:
```
\procedure my-procedure(parameter:"Default value")
This is the procedure, and the parameter is <<parameter>>.
\end
```
The name wrapped in double angled [[brackets|Brackets]] is used a shorthand way of [[transcluding|Transclusion]] the snippet. Each of these <<.def "procedure calls">> can supply a different set of parameters:
```
<<my-procedure>>
<<my-procedure "The parameter">>
```
The parameters that are specified in the procedure call are made available as variables.
!! How Procedures Work
Procedures are implemented as a special kind of [[variable|Variables]]. The only thing that distinguishes them from ordinary variables is the way that the parameters are handled.
!! Using Procedures
* [[Procedure Definitions]] describes how to create procedures
* [[Procedure Calls]] describes how to use procedures
* [[Procedure Parameter Handling]] describes how procedure parameters work