mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-29 11:30:28 +00:00
5b20255749
The \define pragma below defines a macro called tags. should be: The \define pragma below defines a macro called tags-of-current-tiddler.
37 lines
1.7 KiB
Plaintext
37 lines
1.7 KiB
Plaintext
caption: Variables
|
|
created: 20141002141231992
|
|
modified: 20150221221850000
|
|
tags: WikiText
|
|
title: Variables in WikiText
|
|
type: text/vnd.tiddlywiki
|
|
|
|
See also the [[introduction to the concept of variables|Variables]].
|
|
|
|
To transclude the value of a variable, use the [[macro call syntax|Macro Calls in WikiText]] with no parameters. You can also use a <<.wlink MacroCallWidget>> widget.
|
|
|
|
A [[macro|Macros]] snippet can contain `$(name)$` as a [[placeholder|Macro Definitions in WikiText]] for which the value of the variable of that name will be substituted.
|
|
|
|
A variable's value can be used as a [[filter parameter|Filter Parameter]], or as a [[widget attribute|Widgets in WikiText]]. The latter supports macro parameters.
|
|
|
|
!! Example: defining a variable
|
|
|
|
<$macrocall $name=".example" n="1"
|
|
eg="""<$set name=animal value=zebra>
|
|
<<animal>>
|
|
</$set>"""/>
|
|
|
|
!! Example: defining a macro
|
|
|
|
The `\define` pragma below [[defines a macro|Macros in WikiText]] called <<.var tags-of-current-tiddler>>. The macro returns the value of the tiddler's <<.field tags>> field, and can be accessed from anywhere else in the same tiddler (or in any tiddler that [[imports|ImportVariablesWidget]] it).
|
|
|
|
<$importvariables filter="$:/editions/tw5.com/macro-examples/tags-of-current-tiddler">
|
|
<$codeblock code={{$:/editions/tw5.com/macro-examples/tags-of-current-tiddler}}/>
|
|
<$macrocall $name=".example" n="2" eg="""The tags are: <<tags-of-current-tiddler>>"""/>
|
|
</$importvariables>
|
|
|
|
!! Example: using a variable as a filter parameter
|
|
|
|
This example uses the <<.olink backlinks>> [[operator|Filter Operators]] to list all tiddlers that link to this one.
|
|
|
|
<$macrocall $name=".example" n="3" eg="""<<list-links filter:"[<currentTiddler>backlinks[]]">>"""/>
|