From: James Coglan <jcoglan@...>
Date: 2009-01-26T04:39:21+09:00
Subject: Re: How can I get the arguments passed to the caller.

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> I have a rather weird question. I want to write a function that
> programatically determines the arguments passed to its caller. Say, if i do
>
> $stuff = []
>
> def bar(arg)
>  foo
> end
>
> def foo
>  first_arg = ....
>  $stuff << first_arg
> end
>
> bar(42)
>
> # By this point, $stuff would be [42]



I think the closest you're going to get is for the calling function to pass
its binding so that foo can read from it:

def bar(*args)
  foo(binding)
end
=> nil
def foo(env)
  puts env.eval("args.first")
end
=> nil
bar 'something'
something

I don't think you can do this transparently. You can't even refer to the
argument list within a single method (I'm thinking of the 'arguments' object
in JavaScript) without mentioning the arguments by name.

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