Re: [xsl] Efficient way to check sequence membership

[ht@xxxxxxxxxxxx (Henry S. Thompson)]

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David Carlisle writes:

> personally I'd just use <xsl:sequence select="$s=$stops"/>
> and leave it to the query optimiser to make this common requirement
> efficient rather than using a more complicated idiom and then hoping
> the query optimiser recognises it.

That is only 1ms faster on average that the "some $s . . ."
alternative, i.e. still more than a factor of 4 slower than the
fastest version.

I'll try Dimitri's binary version tomorrow. . .

ht
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       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
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