[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Efficiency: predicate vs function
On 7/25/07, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> For some anecdotal evidence, when I had this exact > requirement for the Sudoku Solver [1] and switched from > $seq[position() > 1] to subsequence($seq, 2) the performance > increase was significant. If it helps I made the changes around May 2006, so its a while ago now. Along with that the likes of the following: $board[position() > $rowStart and position() <= $rowStart + 9] was changed to: subsequence($board, fn:getRowStart($index), 9) so perhaps the improvements were all there? (fn:getRowStart() is a memo function too) Sorry if I've caused you to waste a day... -- http://andrewjwelch.com
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