Documentation:OCLOperators random: Difference between revisions

OCLOperators random

Latest revision as of 05:58, 20 January 2025

This page was created by Peter on 2019-12-19. Last edited by Edgar on 2025-01-20.

The random operator is used to generate a random value within a specified range or collection. It takes one or two arguments: the first specifies the lower bound or collection, and the second (optional) argument specifies the upper bound. The return value is a randomly selected element from the range or collection.

Int32.Random(Int32 x) returns a random integer [0..x-1].

For example, Int32.Random(100) will return 0, 1, ...,99 - it will never return 100.

The example below shows one way to generate a random string with a random length (between 7-11 characters):

let characters = 'ABCDEFGHJKLMNPQRST23456789'.toCharArray in (
  let wordlength = Int32.Random(5)+7 in (
    Sequence{1..wordlength}->collect(a|characters->at(Int32.Random(100).Mod(tecken->size)+1))->asSeparatedList( '')
  )
)

Note: the exact algorithm for generating random values may vary depending on the implementation of the operator. Also note that there is no random function on Int64

@@ Line 1: / Line 1: @@
+<message>Write the content here to display this box</message>
+The random operator is used to generate a random value within a specified range or collection. It takes one or two arguments: the first specifies the lower bound or collection, and the second (optional) argument specifies the upper bound. The return value is a randomly selected element from the range or collection.
 Int32.Random(Int32 x) returns a random integer [0..x-1].
-For example Int32.Random(100) will return 0, 1, ... ,99. Will never return 100.
+For example, Int32.Random(100) will return 0, 1, ...,99 - it will never return 100.
-Example below shows one way to generate a random string with a random length (between 7-11 characters).
+The example below shows one way to generate a random string with a random length (between 7-11 characters):
 <pre>
@@ Line 10: / Line 13: @@
      Sequence{1..wordlength}->collect(a|characters->at(Int32.Random(100).Mod(tecken->size)+1))->asSeparatedList( '')
    )
-)
+)</pre>'''Note:''' the exact algorithm for generating random values may vary depending on the implementation of the operator. Also note that there is no random function on Int64
-</pre>
+[[Category:OCL General Operators]]
+{{Edited|July|12|2025}}