From: Ricardo Sisnett <rsisnett@...>
Date: 2009-03-19T15:47:57+09:00
Subject: Re: Eval Weird Behavior

Ok I'm answering my own question, just in case anyone stumbles across 
this issue and ends in my post:

I thought you had to add a pair of slashes (\\) to escape the quotes(") 
but it seems that you have to add twice the last number of slashes plus 
one...

So if you had something like this:

class Test
   def a(arg)
      eval(arg)
   end
   def b
      puts "b"
   end
end

In order to recursively call function a and pass "b" to the las call in 
order to get a printed b... you'd have to:

1 Call:
      eval("a(\"b\")")
      =>b
     --One Slash
2 Calls:
      eval("a(\"a(\\\"b\\\")\")")
     --Three Slashes ( 1 * 2 + 1)

3 Calls:
      eval("a(\"a(\\\"a(\\\\\\\"b\\\\\\\")\\\")\")")
      --Seven Slashes ( 3 * 2 + 1)

4 Calls:
      --Fifteen Slashes (7*2 +1 )



I'm not sure if this is useful for anyone besides me and my pretty 
small-scoped project, but who would know?


Thanks again
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