The empty statement ";" - when is it useful?

[Bill Baxter]

On Tue, Jul 28, 2009 at 12:09 AM, Don<nospam at nospam.com> wrote:
>> Walter once claimed that it's useful for automatically generated code.
>> Though I'm still not quite sure how.
>
> Yes. He's recently the claimed the same thing about the comma operator, but
> I don't buy that argument. I've never needed to use either of them myself.
> (In the case of comma, sure it works as a sequence point when you have: a,b,
> return a; but it doesn't work for a,b, return b; which is 50% of the cases.
> I think it's a fallacious argument). Interestingly CommaExpression doesn't
> seem to be defined anywhere in the D spec.

You meant to say it doesn't work for a,b, return a;  right?
And I don't think that would be 50% of the cases.  a,b,return b seems
much more common.

But either way the argument is ridiculous.  It doesn't need to be as
basic an operator as a single comma just for the sake of making code
generation easier.

--bb