From: Siep Korteling <s.korteling@...>
Date: 2008-05-08T05:44:58+09:00
Subject: Re: hash adding values

Tim Wolak wrote:
> Siep Korteling wrote:
> Siep,
> 
> I worked with your code and its giving me the same thing I had before, 
> below is the output of the script.  What I need to do is for example is 
> the account number 740 is to store it as key 740 and the value is the 
> sum of the balances listed.  So where there is the account number listed 
> more than once it uses that account number and balance and moves on to 
> the next line and if that account number is not in the has it puts a new 
> account number with its balance.  Hope this help make a little more 
> sense of what I'm trying to do.
> 
> {"700"=>[2876.86]}
> {"701"=>[654.18]}
> {"702"=>[47.74]}
> {"705"=>[-22.26]}
> {"707"=>[-120.0]}
> {"708"=>[502.63]}
> {"711"=>[394.13]}
> {"712"=>[210.51]}
> {"740"=>[7334.36]}
> {"740"=>[-12430.14]}
> {"740"=>[0.0]}
> {"741"=>[14740.47]}
> {"741"=>[44919.21]}
> {"741"=>[-1009.83]}
> {"742"=>[-385.35]}
> {"744"=>[-2994.75]}
> {"745"=>[-152.86]}

You're creating a different hash for every line. You probably want one 
hash, looking like this:
{700=>2876.86, 701=>654.18, ...}
I guess you have a Hash.new somewhere in your do-end block. (it should 
be before the block) Also you are probably printing the hash inside the 
block. Try it after the block.

<begin code>
@sktylist1 = Hash.new{[]}
@sktylist2 = Hash.new(0)
DATA.each do|line|
  temp = line.chomp.split(",")
  acctnum = temp[0]
  value = temp[1].to_f
  @sktylist1[acctnum] = @sktylist1[acctnum] <<value
  @sktylist2[acctnum] += value
end

p @sktylist1
p @sktylist2

__END__
1234,700.00
5678,-50.00
1234,12.00
8912,35.00
5678,50.00
<end code>
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