Monday, November 08, 2010 at 12:06 AM.

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system.verbs.builtins.table.tableContains

on tableContains (adrtable, adrItem) {
	<<Changes
		<<6/30/10; 2:16:44 PM by DW
			<<Added test code in a bundle at the bottom of the script.
		<<5/18/98 PBS
			<<Use parentOf instead of string manipulation.
			<<More reliable, will work with guest databases.
			<<Old code:
				<<if string.lower (adrtable) beginsWith "root."
					<<adrtable = string.mid (adrtable, 6, infinity)
				<<if string.lower (adritem) beginsWith "root."
					<<adrtable = string.mid (adritem, 6, infinity)
				<<return (string.lower (adritem) beginsWith string.lower (adrtable))
		<<4/6/98 PBS
			<<Compare with string.lower.
		<<2/12/98 at 3:14:52 PM by PBS
			<<Sometimes the addresses begin with "root.", sometimes not.
			<<Take that into account.
		<<10/31/97 at 1:25:00 PM by DW
			<<moved from toys.tableContains
			<<return true if adritem points to something contained within the table
	local (nomad = adritem);
	adrtable = address (adrtable);
	if typeof (nomad^) != tabletype {
		nomad = parentof (nomad^)};
	loop {
		if nomad == adrtable {
			return (true)};
		nomad = parentof (nomad^);
		if nomad == nil {
			return (false)}}}
<<bundle //test code
	<<dialog.alert (tableContains (@system.temp.scripting2.editor.posts, @system.temp.scripting2.editor.posts.["http://scripting.com/stories/2010/06/29/scripting2ChangeNotes.opml"].outline))
	<<dialog.alert (tableContains (@system.temp.scripting2.editor.posts, @scratchpad))

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This listing is for code that runs in the OPML Editor environment. I created these listings because I wanted the search engines to index it, so that when I want to look up something in my codebase I don't have to use the much slower search functionality in my object database. Dave Winer.