From: Brad Phelan <phelan@...>
Date: 2006-12-19T20:25:07+09:00
Subject: Re: Discovering the number of return arguments requested.

Eric Hodel wrote:
> On Dec 19, 2006, at 01:20, Brad Phelan wrote:
> 
>> Is it possible ( and I think not ) that you can discover if any return 
>> arguments are requested when a method is called.
> 
> Methods only ever return one Object.  (Sometimes that Object will be 
> splatted, giving the illusion of multiple arguments.)

True. However that doesn't answer the question as
to whether it is possible to discover if that single object is used
or not. I suspect Ruby syntax would make this difficult to figure
out.

If the critical function is called as the last statement in another 
function or block then the return object can get passed implicitly
up the stack until something takes hold of it.

Brad