2017-09-07 14:48:00 +00:00
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caption: lookup
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created: 20170907103639431
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2021-05-26 12:25:19 +00:00
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modified: 20170907144703051
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2017-09-07 14:48:00 +00:00
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op-input: a [[selection of titles|Title Selection]]
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2021-05-26 12:25:19 +00:00
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op-output: the lookup values corresponding to each input title
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op-parameter: prefix applied to input titles to yield title of lookup tiddler from which value is retrieved
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op-parameter-name: P
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op-purpose: applies a prefix to each input title to yield the title of a tiddler from which the final value is retrieved
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op-suffix: the default value to be used for missing lookups
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op-suffix-name: D
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2017-09-07 14:48:00 +00:00
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tags: [[Filter Operators]]
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title: lookup Operator
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type: text/vnd.tiddlywiki
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2017-09-20 10:48:06 +00:00
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<<.from-version "5.1.15">>
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2017-09-07 14:48:00 +00:00
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2021-05-26 12:25:19 +00:00
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The action of this operator is as follows:
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2017-09-07 14:48:00 +00:00
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* Apply the specified prefix to each input tiddler title, yielding a new list of tiddler titles
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2021-05-26 12:25:19 +00:00
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* Transclude the value of each of those tiddlers
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** Substitute the default value for missing or empty tiddlers
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2017-09-07 14:48:00 +00:00
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* Return the list of values
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<<.operator-examples "lookup">>
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