mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-11 18:50:28 +00:00
38 lines
1.4 KiB
Plaintext
38 lines
1.4 KiB
Plaintext
created: 20221007124007426
|
|
modified: 20240310173130052
|
|
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 parameter:"The parameter">>
|
|
```
|
|
|
|
The parameters that are specified in the procedure call are made available as variables.
|
|
|
|
<<.tip """If a procedure has more than 1 parameter, it is highly encouraged to use "named parameters", as shown in the second example above. Even if it is more to type, it will pay off in the long run.""">>
|
|
|
|
!! 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
|
|
* [[Procedure Syntax]] is a formal syntax description using railroad diagrams
|