RE: How do you select all unique first-position charac

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Subject: RE: How do you select all unique first-position characters?
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Thu, 21 Nov 2002 10:50:16 -0500

Jeff,

That's a node identity test.

count(.) always returns 1. count(.|$node) returns 1 if the current node is the same node as $node, 2 if not. key('keyname',$string)[1] returns the first node in document order whose 'keyname' key value is $string. You get the rest.

It's one of those XPath 1.0 idioms that we've learned to live with.

Cheers,
Wendell

Wendell,
Could you explain to me why the union of the current node with that of the
first node returned from the xsl:key is needed in the count?
Wouldn't that always be 1? I know it's not, because it works.


___&&__&_&___&_&__&&&__&_&__&__&&____&&_&___&__&_&&_____&__&__&&_____&_&&_
    "Thus I make my own use of the telegraph, without consulting
     the directors, like the sparrows, which I perceive use it
     extensively for a perch." -- Thoreau

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Current Thread

RE: How do you select all unique first-position characters?, (continued)
- Jeff Beadle - Thu, 21 Nov 2002 09:38:30 -0500 (EST)
  - Wendell Piez - Thu, 21 Nov 2002 10:52:36 -0500 (EST)
- Jeff Beadle - Thu, 21 Nov 2002 09:46:42 -0500 (EST)
  - David Carlisle - Thu, 21 Nov 2002 10:38:17 -0500 (EST)
  - Wendell Piez - Thu, 21 Nov 2002 10:52:39 -0500 (EST) <=
    - Jeni Tennison - Thu, 21 Nov 2002 11:06:09 -0500 (EST)

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Re: How do you select all uni, David Carlisle	Thread	Re: How do you select all uni, Jeni Tennison
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