There's nothing I can think of and the documentation suggests it's not something that is easy to do.

Yes - the first point I read in that link to the documentation pretty much kills all hope: 
1.If the first operand has declared a subroutine to overload the opera
+tor then use that implementation.

[download]
I suppose (untested) I could do: 
my $n2 = (\$B_obj) - $A_obj;

[download]
and that would at least call module A's oload_minus() subroutine .... which would then be structured to de-reference the first argument and return the intended result.
But that solution is no more practical than the alternative you provided.

Thanks for the reply. I had, of course, consulted the overloading docs but had stopped reading before reaching the bit to which you linked.
It's not the end of the world if I have to modify module B.

Cheers,
Rob

In reply to Re^2: A little overloading conundrum by syphilis
in thread A little overloading conundrum by syphilis

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