From: Eric Hodel <drbrain@...7.net>
Date: 2005-04-12T16:41:20+09:00
Subject: Re: unable to reason

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On 12 Apr 2005, at 00:12, Daun Jaun wrote:

> statArr=[]
> for i in 0...3
>     statArr[i]=[]
>     for j in 0...3
> 	statArr[i][j]=[]
>     	for k in 0...2
> 		statArr[i][j][k]=0
> 	end
>     end
> end
>
> p statArr
> statArr[0][2][1]+=3
> statArr[1][0][0]+=2
> statArr[2][2][1]+=1
> p statArr
>
> statArr=Array.new(3,Array.new(3,Array.new(2,0)))

Here you asked Ruby to create an Array containing three copies of the 
same Array, not three different Arrays.

try stat_arr = Array.new 3 { Array.new 3 { Array.new 2, 0 }}

> p statArr
> statArr[0][2][1]+=3
> statArr[1][0][0]+=2
> statArr[2][2][1]+=1
> p statArr
>
>
> what is going on in the above code why is there the discrepancy in the 
> output
> is it a bug or paraller processing feature

It is your bug :)

-- 
Eric Hodel - drbrain@segment7.net - http://segment7.net
FEC2 57F1 D465 EB15 5D6E  7C11 332A 551C 796C 9F04

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