Re: [boost] Postfix Increment Operator

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2002-06-11 06:04:23

From: "Richard Peters" <R.A.Peters_at_[hidden]>

> Then you can replace the postfix increment operator with
>
>     number operator++(int)
>     { return postfix_increment(*this); }

Why not just:

    number operator++(int)
    {
        return postfix_incrementer<number>(*this);
    }

?

> The only thing is that I do not clearly see if there's still the copying
> advantage...

I'm pretty sure there's not: the object will be copied again when it is
sliced for the return value. This one will work:

    postfix_incrementer<number> operator++(int)
    {
        return postfix_incrementer<number>(*this);
    }

But of course, the type identity of the result of the function has
changed... :(

-Dave