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[xsl] Re: Re: a nicer total sibling count than this
Subject: [xsl] Re: Re: a nicer total sibling count than this From: Dimitre Novatchev <dnovatchev@xxxxxxxxx> Date: Wed, 18 Sep 2002 21:49:07 -0700 (PDT) |
--- scruss at sympatico dot ca wrote: > Jeni Tennison wrote: > > > > <xsl:if test="../def[2]"> > > ... > > </xsl:if> > > How elegant! Thank you. > > Think I'll be off to Chapters.ca now to buy your book > (and DaveP's too, since I'll have to print this thing eventually.) > > Stewart While this is indeed ellegant, the reason Jeni put first the other solution: preceding-sibling::def or following-sibling::def I think, is because three nodes must be visited in order to evaluate ../def[2], while the "or" expression above can be evaluated visiting two nodes (worse case) or even only a single node (best case). This means that the "or" expression above can be evaluated from 1.5 to three times faster. Of course, the absolute time difference will be very small, but if such expressions are evaluated many times there could be some greater time savings. ===== Cheers, Dimitre Novatchev. http://fxsl.sourceforge.net/ -- the home of FXSL __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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