This XQuery Module contains non-deterministic functions for returning random values.
Conventions
All functions in this module are assigned to the http://basex.org/modules/random
namespace, which is statically bound to the random
prefix.
All errors are assigned to the http://basex.org/errors
namespace, which is statically bound to the bxerr
prefix.
Functions
random:double
Signatures
|
random:double() as xs:double
|
Summary
|
Returns a double value between 0.0 (inclusive) and 1.0 (exclusive).
|
|
|
random:integer
Signatures
|
random:integer() as xs:integer
random:integer($max as xs:integer) as xs:integer
|
Summary
|
Returns an integer value, either in the whole integer range or between 0 (inclusive) and the given maximum (exclusive)
|
|
|
random:seeded-double
Signatures
|
random:seeded-double($seed as xs:integer, $num as xs:integer) as xs:double*
|
Summary
|
Returns a sequence with $num double values between 0.0 (inclusive) and 1.0 (exclusive). The random values are created using the initial seed given in $seed .
|
|
|
random:seeded-integer
Signatures
|
random:seeded-integer($seed as xs:integer, $num as xs:integer) as xs:integer*
random:seeded-integer($seed as xs:integer, $num as xs:integer, $max as xs:integer) as xs:integer*
|
Summary
|
Returns a sequence with $num integer values, either in the whole integer range or between 0 (inclusive) and the given maximum (exclusive). The random values are created using the initial seed given in $seed .
|
|
|
random:gaussian
Signatures
|
random:gaussian($num as xs:integer) as xs:double*
|
Summary
|
Returns a sequence with $num double values. The random values are Gaussian (i.e. normally) distributed with the mean 0.0. and the derivation 1.0.
|
|
|
random:uuid
Signatures
|
random:uuid() as xs:string
|
Summary
|
Creates a random universally unique identifier (UUID), represented as 128-bit value.
|
Examples
|
math:uuid() eq math:uuid() will (most probably) return the boolean value false .
|
Changelog
The module was introduced with Version X. It includes functionality which was previously located in the Math Module.