Difference between revisions of "Random Module"
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=Functions= | =Functions= | ||
− | ==random: | + | ==random:double== |
{| | {| | ||
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| width='90' | '''Signatures''' | | width='90' | '''Signatures''' | ||
− | |{{Func|random: | + | |{{Func|random:double||xs:double()}}<br /> |
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| '''Summary''' | | '''Summary''' | ||
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|} | |} | ||
− | ==random: | + | ==random:integer== |
{| | {| | ||
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| width='90' | '''Signatures''' | | width='90' | '''Signatures''' | ||
− | |{{Func|random: | + | |{{Func|random:integer|$max as xs:integer?|xs:integer()}}<br /> |
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| '''Summary''' | | '''Summary''' | ||
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|} | |} | ||
− | ==random:seeded | + | ==random:seeded-double== |
{| | {| | ||
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| width='90' | '''Signatures''' | | width='90' | '''Signatures''' | ||
− | |{{Func|random:seeded- | + | |{{Func|random:seeded-double|$seed as xs:integer, $num as xs:integer|xs:items()*}}<br /> |
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| '''Summary''' | | '''Summary''' | ||
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|} | |} | ||
− | ==random:seeded- | + | ==random:seeded-integer== |
{| | {| | ||
|- | |- | ||
| width='90' | '''Signatures''' | | width='90' | '''Signatures''' | ||
− | |{{Func|random:seeded- | + | |{{Func|random:seeded-integer|$seed as xs:integer, $num as xs:integer, $max as xs:integer?|xs:items()*}}<br /> |
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| '''Summary''' | | '''Summary''' | ||
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|} | |} | ||
− | ==random: | + | ==random:gaussian== |
{| | {| | ||
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| width='90' | '''Signatures''' | | width='90' | '''Signatures''' | ||
− | |{{Func|random: | + | |{{Func|random:gaussian|$num as xs:integer|xs:items()*}}<br /> |
|- | |- | ||
| '''Summary''' | | '''Summary''' |
Revision as of 16:40, 19 July 2012
This XQuery Module contains non-deterministic functions for returning random values.
Contents
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($max as xs:integer?) as xs:integer() |
Summary | Returns an integer value, either in the whole integer range or between 0 (inclusive) and the given maximum (exclusive) |
random:seeded-double
Signatures | random:seeded-double($seed as xs:integer, $num as xs:integer) as xs:items()* |
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, $max as xs:integer?) as xs:items()* |
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:items()* |
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 |
|
Changelog
The module was introduced with Version X. It includes functionality which was previously located in the Math Module.