From: Tobias Reif <tobiasreif@...>
Date: 2001-10-26T01:07:17+09:00
Subject: [ruby-talk:23311] Re: why the @ s ?

Dave,

thanks for your explanation. But I'm still confused: (thanks for your 
patience)

 > a = 10
 > def fred
 >   p a    #=> -:3:in `fred': undefined local variable or method `a'
 > end

with ruby 1.6.3 (2001-03-19) [i386-cygwin] :
--------------------
a = 10
def fred
   p a      #=> no error
end
--------------------

works:
--------------------
var01 = 'var01'

def print_var var
   print var
end

print_var var01 #=> prints 'var01'
--------------------

doesn't:
--------------------
var01 = 'var01'

def print_var01

   print var01

end

print_var01

# 18:in `print_var01': undefined local variable or method `var01' for
# #<Object:0x45aa028> (NameError)
--------------------

In the last example: how could I make it work without adding an @ sign?
Smething like

Object.new.print_var01
print_var01()
...

in the last line? Since print_var01 is defined as method just above; why 
doesn't Ruby treat it as such?

Tobi

-- 
Tobias Reif
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