From: Ian Macdonald <ian@...>
Date: 2004-01-24T02:45:07+09:00
Subject: detecting default parameters

Hello,

Does anyone know of a way to detect whether default parameters are being
used in a method? I'm looking for something like the pseudo-method
'default?' in the following example:

def my_method(foo='bar')
  if foo.default?
    puts "warning: default value #{foo} being used for 'foo'"
  end
end

I suspect Ruby no longer holds any state at this point to reflect the
fact that the caller did not supply a parameter, but I'm hoping there's
some way to do it.

Ian
-- 
Ian Macdonald               | When the wind is great, bow before it; when
System Administrator        | the wind is heavy, yield to it. 
ian@caliban.org             | 
http://www.caliban.org      | 
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