From: Tom Cloyd <tomcloyd@...>
Date: 2009-04-23T15:30:15+09:00
Subject: kernal::binding problem

Trying this for the first time, and, as usual, not quite getting it.

Everything I can find on kernal::binding tells me that I just call it 
and will get back a binding object which can be passed in a call to 
eval. But...it doesn't work for me.

In my main, I have a module required which contains a method I'm trying 
to call. For reasons irrelevant to this current problem, I'm using an 
eval of a string to do it, and want the method to execute in the 
environment of the main program. So...

eval( "moduleName.methodName", binding)

Causes *crash* due to by attempt to access a variable which exists in 
the calling environment but not in the module. In spite of passing the 
binding, the method knows nothing of the variable. It's not working.

All examples I can find just do something like..

def meth_x
y = 1
return binding
end

Then 'y' is accessed using the binding. Well, if one can return a 
binding to initialize a variable -

z = meth_x
eval( "y", z )  # => "1"

Then why can't I simply pass 'binding' in an eval call FROM the calling 
environment?

I must be missing something, to state the obvious.

Can someone explain?

Thanks,

t.

-- 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC - Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website) 
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