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Docs: Update indexes operator to note that results are sorted

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See https://talk.tiddlywiki.org/t/how-can-i-get-the-indexes-of-a-data-tiddler-in-the-order-they-are-given-there/3359
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jeremy@jermolene.com 2022-12-29 09:43:18 +00:00
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editions/tw5.com/tiddlers/filters/indexes.tid
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@ -1,5 +1,5 @@
created: 20140410103123179
modified: 20150203185150000
modified: 20221229094244039
tags: [[Filter Operators]]
title: indexes Operator
type: text/vnd.tiddlywiki
@ -9,8 +9,10 @@ op-input: a [[selection of titles|Title Selection]]
op-parameter: none
op-output: all the property names or indices contained in the input data tiddlers
Each input title is processed in turn, and is ignored if it does not denote a [[data tiddler|DataTiddlers]]. The list of property names is retrieved from the data tiddler (in no particular order) and then [[dominantly appended|Dominant Append]] to the operator's output.
Each input title is processed in turn, and is ignored if it does not denote a [[data tiddler|DataTiddlers]]. The sorted list of property names is retrieved from the data tiddler and then [[dominantly appended|Dominant Append]] to the operator's output.
Where a tiddler's [[content is JSON|JSONTiddlers]] with an array as its root, the <<.op indexes>> operator retrieves a selection of integer indices instead.
Note that behind the scenes, the name/value pairs in a dictionary tiddler are represented as a [[JSON object|JSONTiddlers]]. JSON objects do not maintain a guaranteed ordering and so we can’t reliably retain the ordering of the data in the file.
Where the content of a tiddler is in JSON format with an array as its root, the <<.op indexes>> operator retrieves a selection of integer indices instead.
<<.operator-examples "indexes">>