Returning lists

From: Andreas Strack <>
Date: Wed 06 Jun 2001 03:51:35 PM GMT
Message-ID: <>
how do i return list from external C++-Functions, especially empty lists?

I tried to follow the examples in the embedding and interfacing manual, 
but it didn't work
(unify did not return EC_succeed).

For example I tried:

// return the empty list:
return unify(EC_word(EC_arg(1), nil()));


return unify(EC_arg(1), nil());


return unify(EC_arg(1), EC_word(nil()));

they all didn't work.
I would be glad if someone could help me out.

   Andreas Strack
Received on Wed Jun 06 16:51:12 2001

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