Oh - so you're introducing the statistical property known as The Bourbon Variance?
Emmitt Dove Manager, DairyPak Business Systems Evergreen Packaging, Inc. [EMAIL PROTECTED] [EMAIL PROTECTED] (203) 643-8022 -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Wills, Steve Sent: Tuesday, April 08, 2008 3:34 PM To: RBASE-L Mailing List Subject: [RBASE-L] - RE: [SPAM] [RBASE-L] - Random numbers Mike, that's too heady for my tastes ... >> Except heads is slightly leveraged for some reason.... Well, while you're groanin' from that one, is that true, that there is a variance in (center of) mass that actually precludes this being TOTALLY random? I think it might be better rendered: "Steve's head is better when lightly beverage ..." Steve -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of MikeB Sent: Tuesday, April 08, 2008 2:20 PM To: RBASE-L Mailing List Subject: [RBASE-L] - RE: [SPAM] [RBASE-L] - Random numbers ----- Original Message ----- From: "Wills, Steve" <[EMAIL PROTECTED]> To: "RBASE-L Mailing List" <[email protected]> Sent: Tuesday, April 08, 2008 2:26 PM Subject: [RBASE-L] - RE: [SPAM] [RBASE-L] - Random numbers > Remember, random does not guarantee unique. Just think about flippin' a > Precisely... > coin repeatedly. The result is random within a heads||tails solution domain and each iteration is independent of the previous and/or the subsequent. > Except heads is slightly leveraged for some reason.... My $0.02, Steve in Memphis -- ************************** -- *** RandomFuncTest.RMD *** -- ************************** -- *** Init Counter var *** SET VAR vCounter INT=0 WHILE vCounter < 1000 THEN -- *** Put values into DUMMY; CTXT() used to convert vCounter *** INSERT INTO DUMMY (*) VALUES ((RANDOM(15)),(CTXT(.vCounter))) -- *** Increment Counter var *** SET VAR vCounter=(.vCounter + 1) ENDWHILE RETURN R>SELECT Dummy_INT,COUNT(*) FROM DUMMY GROUP BY Dummy_INT Dummy_INT COUNT (*) ---------- ---------- 0 73 1 70 2 66 3 79 4 62 5 59 6 64 7 79 8 50 9 72 10 60 11 58 12 68 13 75 14 65 R>LIST TABLE DUMMY Table: DUMMY No Lock(s) No. Column Name Attributes --- ------------------ ------------------------------------------------------ 1 DUMMY_INT Type : INTEGER 2 DUMMY_TEXT Type : TEXT 8 Current number of rows: 1000 -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Marc Sent: Tuesday, April 08, 2008 11:56 PM To: RBASE-L Mailing List Subject: [SPAM] [RBASE-L] - Random numbers Importance: Low I just tested this 3 times and get the same numbers each time. I am setting the Random number to 15 and created 10 The numbers I get are 0 0 5 0 5 3 8 2 10 14 each of the 3 times I tested this. I hope I am missing something, I sent an update out several months back that needs truley random numbers. Marc ----- Original Message ---- From: MikeB <[EMAIL PROTECTED]> To: RBASE-L Mailing List <[email protected]> Sent: Friday, April 4, 2008 5:16:28 PM Subject: [RBASE-L] - Re: Random has order ? ----- Original Message ----- From: "Castanaro, Bob" <[EMAIL PROTECTED]> To: "RBASE-L Mailing List" <[email protected]> Sent: Friday, April 04, 2008 7:06 PM Subject: [RBASE-L] - Re: Random has order ? I think RBTI needs to step in on this sooner or later and advise. I'm sure they are probably looking at this now. Maybe I am wrong, but I thought the random function generator had some sort of trigger based on the system time it was started. I know that many, many years ago, I and some others had trouble with repeating random series, but I thought there was a fix in one of earlier versions. I am about to rewrite a random drug screening program based on this function and I need to count on it to be truly random, each time it is run. That is the reason for GUIDs. When it Absolutely has to be random. Would that Help? Bob C -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of MikeB Sent: Friday, April 04, 2008 6:58 PM To: RBASE-L Mailing List Subject: [RBASE-L] - Re: Random has order ? A Further test of 200 passwords produced 1 duplicate. YMMV ----- Original Message ----- From: "MikeB" <[EMAIL PROTECTED]> To: "RBASE-L Mailing List" <[email protected]> Sent: Friday, April 04, 2008 6:51 PM Subject: [RBASE-L] - Re: Random has order ? > Frank, > Try this using the new DLCALL functions in RBASE > > > {These two must be declared only ONCE in an RBASE SESSION} > STDCALL function 'GetTickCount' () : integer > STDCALL void 'Sleep' (integer) > { > "We get the last two numbers from the TickCount, test if they are between > Ascii 65 and 90, if success, then add to String vPASS. If String is > vPassLength, then write to file. It takes a couple of minutes to > generate 80 passwords. In my test, there were no Dupes. I used RBASE > RANDOM function to make the Sleep API vary so the GetTickCount would be > more random as well. > } > > > IF (chkvar('vsleep')) = 0 THEN > SET VAR vsleep INTEGER = 100 > ENDIF > > Set var vMaxWordsToGen integer = 80 > Set var vPassLength integer = 8 > SET VAR vret INTEGER = 0 > SET VAR i INTEGER = 0 > SET VAR vpass TEXT = NULL > SET VAR vgettick INTEGER = NULL > SET VAR vtext TEXT = '' > SET VAR vascii INTEGER = 0 > OUTPUT holdrand.csv > > > WHILE i < .vMaxWordsToGen THEN > SET VAR vsleep = (RANDOM(50)) > SET VAR vret = (dlcall('Kernel32','Sleep', vsleep)) > SET VAR vgettick = (dlcall('Kernel32','GetTickCount')) > SET VAR vtext = (CTXT(.vgettick)) > SET VAR vascii = (INT((SGET(.vtext ,2, (SLEN(.vtext)) - 1)))) > IF vascii BETWEEN 65 AND 90 THEN > SET VAR vpass = (.vpass + (CHAR(.vascii))) > ENDIF > IF (SLEN(.vpass)) = .vPassLength THEN > WRITE .vpass > SET VAR vpass = '' > SET VAR i = (.i + 1) > ENDIF > ENDWHILE > OUTPUT SCREEN > RETURN > > ----- Original Message ----- > From: "Frank Taylor" <[EMAIL PROTECTED]> > To: "RBASE-L Mailing List" <[email protected]> > Sent: Friday, April 04, 2008 3:59 PM > Subject: [RBASE-L] - Random has order ? > > > I created a password generator the other day using the Random command as > such > > SET VAR gen1 = (RANDOM(33)) > IF gen1 BETWEEN 1 AND 24 THEN > SET VAR gen2 = (RANDOM(2)) > ENDIF > > The code loops 8 times and uses the values of gen1 and gen2 with a case > statement to make an 8 character password. The first random generated > gives > me either a letter or number and the second random generator gives me > upper > or lower case if it is to be a letter (I do not use L,O or Zero in case > you > are wondering) > > I used the code to generate 7 passwords yesterday, then today I used the > code > to generate 8 more passwords.. When I went back to look at them, the first > 7 > passwords I created today, were the exact same and in the same order as > the > Seven I created yesterday. I went out of RBase and came back in and sure > enough it started over.. So can I assume that Random is not really random > but has order ? Anyone have a suggestion as a work around, maybe using a > system variable in the mix ? > > Using RB7.6 ver 7.6.3.30321 > > > n Frank > > Frank Taylor - Information Systems Administrator > F.J. O'Hara & Sons, Inc - Araho Transfer Inc. > Boston, MA - Rockland, ME - Miami, FL > Direct Dial - 617-790-3093 > email: [EMAIL PROTECTED] > > >
