Does anyone know the answer to this? I wanted to just use java's built in
method to shuffle and array, but encountered the same issue as Jeff.
Right now I'm using a method I pulled from CFlib, but java shuffle would
probably be better and faster.
On Tuesday, February 2, 2010 at 1:15:41 PM UTC-6, J.Lucido wrote:
>
> I have a UDF that I have used over the years that generates random
> strings, etc. that I use throughout applications. In an effort to try
> and create a pretty random string I generate an array of alphanumeric
> values which I then use as a "seed" array to generate a string of X
> characters long.
>
> The core of the function relies on the java.util.collections shuffle
> method to randomly re-arrange the array element order. Today I tried
> to use the UDF for the first time on OBD and I keep getting strings in
> the order I created the seed string. I realized the issue pertained to
> the lack of "randomness" in my seed array.
>
> I stripped out my code to a test page to try and find a way to shuffle
> the list and I cannot seem to get a random array "back" after invoking
> the shuffle method. Here is my test:
>
> <cfscript>
> myArray = [1,2,3,4,5,'A','B','C'];
> al = CreateObject("java", "java.util.ArrayList").init(myArray);
> al2 = CreateObject("java", "java.util.ArrayList").init();
> c = CreateObject('java', 'java.util.Collections');
>
> al2.add("1");
> al2.add("2");
> al2.add("3");
> al2.add("4");
> al2.add("5");
> al2.add("D");
> al2.add("E");
> al2.add("F");
>
> c.shuffle(al);
> c.shuffle(al2);
> </cfscript>
>
> <cfdump var="#al#" />
> <cfdump var="#al2#" />
>
> You will see that both test arrays, "al" and "al2" are in the same
> order as when they were created. Any ideas on how to get the
> collection's shuffle method to work and OBD to return the resultant?
>
> Any help is greatly appreciated.
>
> Kind regards,
> -Jeff Lucido
>
>
--
--
online documentation: http://openbd.org/manual/
http://groups.google.com/group/openbd?hl=en
---
You received this message because you are subscribed to the Google Groups "Open
BlueDragon" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
