[xquery-talk] Random number generation : requirements

Matthias Brantner matthias.brantner at 28msec.com
Tue May 6 10:42:23 PDT 2014


Here is the documentation of a module containing functions to generate
random numbers or strings with Zorba.


Please note that some functions are using Zorba's nondeterministic annotation.
Also note, that there is one function that creates uuids returned as string.

The functions have proven themselves useful in plenty of scenarios like
password or web session token generation.

I hope you find this module useful.


On May 6, 2014, at 9:53 AM, Michael Kay <mike at saxonica.com> wrote:

> The W3C WGs are looking at the idea of introducing a random-number function of some kind in XPath 3.1. The challenge of course is making this both usable and a pure function with no side-effects. We have various design ideas which we need to test against requirements.
> If you have any applications that use or need such a function, please could I have a brief description of the way it uses random numbers, e.g. just wanting a single random number, a random permutation of 52 integers, an arbitrary sequence of random numebrs for test data generation, etc.
> If you're currently using the EXSLT random-sequence() function, please share your experience with it.
> Michael Kay
> Saxonica
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