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TiddlyWiki5/editions/tw5.com/tiddlers/concepts/DominantAppend.tid
2015-01-18 18:39:00 +00:00

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created: 20151714300000000
modified: 20150117172438000
tags: Concepts
title: Dominant Append
type: text/vnd.tiddlywiki
A <<.def "dominant append">> is a frequent occurrence in [[filter|Filters]] processing.
Filters manipulate sets of items in which no item can appear more than once, and they often append one such set to another.
This is done in such a way that if the result would contain two copies of the same item, the <<.em earlier>> one is removed. The appended items thus dominate over any earlier duplicates.