Re: operator= function

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Thu, 6 Dec 2007 12:10:12 -0500
Message-ID:
<fj9adl$gig$1@news.datemas.de>
terminator wrote:

On Dec 6, 12:52 am, "Victor Bazarov" <v.Abaza...@comAcast.net> wrote:

terminator wrote:

On Dec 4, 11:53 pm, "Victor Bazarov" <v.Abaza...@comAcast.net>
wrote:

[..]
Imagine (and that will require you to think outside the box, I *am*
holding my breath for this one) that the OP wants to check the
success of the assignment operation. The OP could then define

    class A {
        bool operator=(const A& other);
    };

so that the assignment could be either checked


you will lose the ability to chain:

{
int a, b, c;
a=b=c;//ok
}{
A a, b, c;
a=b=c;//error
}


Chaining is not necessarily a good idea. Neither is the assignment
operator that can fail, of course. In that case it would probably
be best to have a member function that would return 'bool'.


as long as OP needs a type that follows the syntax for intrisic
types ,chaining must not be dropped.But generally you are right of
course.

I prefere a conversion operator to an intrinsic type ,or at least a
checker function like 'auto_ptr::get' or
'some_STL_container::empty'.


Well, as we discussed elsethread, conversion to an integral type may
not be the right choice, but conversion to 'void*' could work (like
it does for streams).


why do you insist on 'void*'?


I don't. It's just another option, which is considered better.
You seem to not like it. Why?

V
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