From: Brandon Larocque <larocque.brandon@...>
Date: 2009-08-25T04:24:08+09:00
Subject: Ruby eval

I am trying to learn Ruby as a first language, ( I tended to go back and
forth over languages in my studies, but I plan, now, to focus on Ruby ),
and came across a confusing problem. My brother likes to play Mafia Wars
on facebook and asked me to come up with something simple. So I put a
little something together, and it involved the eval function.

From what I've read, recently, people tend to look down on the eval
function? Why is this? I have a few classes that have multiple names, so
I decided to use it to work through the problem I was having ( I didn't
want to write a bunch of loops ). For example :

( $jobarea == "hi" or $jobarea == "es" ) ? (loop = 9) : ( ($jobarea ==
"ca") ? (loop = 8) : (loop = 7) )
expcost = [] ; exppay = [] ; pay = [] ; name = []
for i in (1..loop) do
  eval("expcost.push $#{$jobarea}_job#{i}.expcost")
  eval("exppay.push $#{$jobarea}_job#{i}.exppay")
  eval("pay.push $#{$jobarea}_job#{i}.pay")
  eval("name.push $#{$jobarea}_job#{i}.name")
end

Is there any way that I might be able to do this without eval? Or is it
alright the way I have done it?

Regards,
Brandon LaRocque
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