Re: [basex-talk] Error with function-lookup and static variable

On Thu, Sep 19, 2024 at 04:08:34PM +0200, Christian Grün scripsit: [snip]

Integers in BaseX are limited to 64bit (that’s something the spec allows). You can use decimals to work with greater numbers:

declare variable $factorial := fn($x) { if($x > 1) then $x * $factorial($x - 1) else $x }; $factorial(1000.0)

If you need even larger results, you can use a tail-call-optimized variant…

declare variable $factorial := fn($x, $result) { if($x > 1) then $factorial($x - 1, $x * $result) else $result }; $factorial(100000.0, 1)

…or fold-left:

fold-left(1 to 100000, 1.0, op('*'))

Hope this helps,

Most helpful; thank you! It feels like my understanding of how types and processing interact has improved.

-- Graydon