You don't actually need to use the StructKeyExists though
I would take what Russ said and rewrite the function to this:
function getRandomNumberArray(length, count) {
var min = "1" + repeatString("0", length - 1);
var max = repeatString("9", length);
var uniquer = structNew();
while (structCount(uniquer) LT count) {
uniquer[randRange(min, max)] = "";
}
return StructKeyArray(uniquer);
}
Or you could return the StructKeyList(uniquer), if you rather have the
Random numbers in a list
/Max
On 7/26/07, Ben Nadel <[EMAIL PROTECTED]> wrote:
> Barney, I love the 1XYZ-N technique for the length constraint That's
> damn brilliant!
>
> ......................
> Ben Nadel
> Certified Advanced ColdFusion MX7 Developer
> www.bennadel.com
>
> Need ColdFusion Help?
> www.bennadel.com/ask-ben/
>
> -----Original Message-----
> From: Barney Boisvert [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, July 25, 2007 6:01 PM
> To: CF-Talk
> Subject: Re: Generate Random Number 1000 - No Duplicates
>
> I haven't tested this (just wrote it in the email), but it should be
> close:
>
> function getRandomNumberArray(length, count) {
> var min = "1" + repeatString("0", length - 1);
> var max = repeatString("9", length);
> var uniquer = structNew();
> var result = arrayNew(1);
> var num = "";
> while (arrayLen(result) LT count) {
> num = randRange(min, max);
> if (NOT structKeyExists(uniquer, num)) {
> uniquer[num] = "";
> arrayAppend(result, num);
> }
> }
> return result;
> }
>
> cheers,
> barneyb
>
>
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