From: Henrik Horneber <ryco@...>
Date: 2004-09-14T17:52:49+09:00
Subject: Re: Catching undefined global variable errors

George Moschovitis wrote:
> Hello everyone,
> 
> have a look the following surprising code:
> 
> $the_key = "ley1" # a common orthographic error
> 
> a = { "key1" => 1, "key2" => 2}
> 
> unless a[$the_key]
> # ruby doesnt catch this error
> puts "SURPRISE!!"
> end
> 
> Is there a way to catch such orthographic errors (and save
> valueable debugging time)? I expected that the interpreter
> would raise an Exception (undefined global or something) for
> this code.
> 
Hi!

Well, the global _is_ defined. The orthographic error is in the value, 
not the variable name. How should the compiler/interpreter know what you 
plan to do with your keys for the hash? :)

regards,

Henrik