From: RRACINE@ADA20.ISI.EDU (Roger Racine)
Subject: overloding the equals operator
Date: Fri, 26-Sep-86 10:23:43 EDT [thread overview]
Date: Fri Sep 26 10:23:43 1986
Message-ID: <8609271155.AA05214@ucbvax.Berkeley.EDU> (raw)
Could someone please explain WHY one needs to use a derived type
to overload the "=" operator? In particular, why does this not work?
Instead of:
function "="(left, right : my_type) return boolean;
I tried :
function "="(first, second : my_type) return boolean;
I thought that when the access type was declared, an implicit declaration
of the function "="(left, right : my_type) return boolean would occur.
Then by using named notation inside the body of "=" I would be able to
use the implicit "=".
It does not work. Is this due to some rule about scope? Or are the two
compilers I checked it on wrong?
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