From: Smgspices@...
Date: 2006-11-29T03:46:08+09:00
Subject: Re: rand random. You've got to be kidding

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In a message dated 11/28/2006 11:08:19 A.M. US Mountain Standard Tim,  
brabuhr@gmail.com writes:

>  Surely it must be possible to initialize rand with current date and  time.
> Documents seem to indicate this is done with rand(0) or srand  with no 
value. I
> have tried both methods and I get the same tired old  sequence of numbers. I
> would write my own random number generator  except I don't know how to get a
> numeric value out of Time.

Can  you post the code that isn't working for you?



I was running the following in SciTE
class Dominoes
attr_writer :deck
def  initialize(number)
@deck= Array.new
0.upto(number)  {|i| 0.upto(i) {|j| @deck.push([i, j])}}
end

def  shuffle!
@deck = @deck.sort{rand}
p  @deck
end
end
 
a=Dominoes.new(6)
a.shuffle!
 
The p @deck was added so I could see what was being done.
 
Every time I press F5 I get exactly the same result:
[[6, 6], [4, 4], [0, 0], [5, 0], [1, 1], ...
I get the same results if I wait a few minutes or come back the next day. I  
get exactly the same results when I use fxri and freeRIDE. I am running Ruby  
version 1.18.4.
 
Charlie

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