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RAND() not very random
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20/09/2006 12:26:18
 
 
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Forum:
Visual FoxPro
Catégorie:
Autre
Titre:
RAND() not very random
Versions des environnements
Visual FoxPro:
VFP 7 SP1
OS:
Windows XP SP2
Divers
Thread ID:
01155607
Message ID:
01155607
Vues:
85
Here's a funny one. No biggie but a bit annoying.

I use the following code to generate a fairly unique filename for my exported XLS file, incorporating today's date + a random no. suffix, in case several XLSs are generated in one session/day, so they don't need to keep typing in a new name. This has been working fine till today. But today it keeps giving 851 and 856 (and others similar) off my m/c AND the 2 users' m/cs, such that my code, and Excel's interface keep asking if want overwrite.
lcRandNum	  = ALLTRIM( STR( INT( RAND() * 1000)))
lcDateStr	  = ALLTRIM( DTOC( DATE()))
lcDateStr	  = STRTRAN( lcDateStr, "-", "_") + lcRandNum
lcFilePath = PUTFILE("Export Results", "S" + lcDateStr, "XLS")
Both when testing and today I've been issuing:

? STR( INT( RAND() * 1000))

repeatedly at the command line with expected varied results. Any ideas?

'ppreciate it

Terry
- Whoever said that women are the weaker sex never tried to wrest the bedclothes off one in the middle of the night
- Worry is the interest you pay, in advance, for a loan that you may never need to take out.
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