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36 lines
1.2 KiB
Plaintext
36 lines
1.2 KiB
Plaintext
created: 20221007124007426
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modified: 20221019081352266
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tags: Concepts Reference
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title: Procedures
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type: text/vnd.tiddlywiki
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!! Introduction
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<<.from-version "5.3.0">> A <<.def procedure>> is a named snippet of text. They are typically defined with the [[Pragma: \procedure]]:
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```
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\procedure my-procedure(parameter:"Default value")
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This is the procedure, and the parameter is <<parameter>>.
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\end
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```
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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:
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```
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<<my-procedure>>
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<<my-procedure "The parameter">>
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```
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The parameters that are specified in the procedure call are made available as variables.
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!! How Procedures Work
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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.
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!! Using Procedures
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* [[Procedure Definitions]] describes how to create procedures
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* [[Procedure Calls]] describes how to use procedures
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* [[Procedure Parameter Handling]] describes how procedure parameters work
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