From: Todd Benson <caduceass@...>
Date: 2008-05-28T04:48:19+09:00
Subject: Re: n00b question

On Tue, May 27, 2008 at 1:36 PM, Todd Benson <caduceass@gmail.com> wrote:

...some code that didn't paste correctly (the spaces).

This is what it is supposed be...

post.txt:
   a   1
   b - 2
   a - 4
   b   8
RPT1   2
RPT
   g - 1


prev.txt:
   a   2
   b - 2
   a   0
   b   7
   z   9
RPT1   2


run_report.rb:
post = Hash.new(0)
IO.foreach("post.txt") do |line|
  post[line[3..3]] += line[5..7].to_i.to_f unless line[0..2] == "RPT"
end

prev = Hash.new(0)
IO.foreach("prev.txt") do |line|
  prev[line[3..3]] += line[5..7].to_i.to_f unless line[0..2] == "RPT"
end

report = {}

(post.keys | prev.keys).each do |k|
  report[k] = post[k], prev[k], post[k] - prev[k]
end

p report


...and no empty lines in your data files, or you'll have to ignore
them, too, in your program.

I figured out what happened.  I copied, then pasted back to my editor,
then copied back again.

Sorry,

Todd