TiddlyWiki5/editions/tw5.com/tiddlers/procedures/Procedures.tid

created: 20221007124007426
modified: 20230419103154329
tags: Concepts Reference
title: Procedures
type: text/vnd.tiddlywiki

!! Introduction

<<.from-version "5.3.0">> 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
Docs updates 2022-10-07 15:56:21 +00:00			`created: 20221007124007426`
Update modification times of doc tiddlers So that they are at the top of the recent tab 2023-04-19 10:32:34 +00:00			`modified: 20230419103154329`
Docs updates 2022-10-07 15:56:21 +00:00			`tags: Concepts Reference`
			`title: Procedures`
			`type: text/vnd.tiddlywiki`

			`!! Introduction`

Docs updates 2022-10-09 16:34:22 +00:00			`<<.from-version "5.3.0">> A <<.def procedure>> is a named snippet of text. They are typically defined with the [[Pragma: \procedure]]:`
Docs updates 2022-10-07 15:56:21 +00:00
			```
			`\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`