Jarrett Billingsley wrote:
On Tue, Jul 7, 2009 at 4:15 PM, Andrei
Alexandrescu<seewebsiteforem...@erdani.org> wrote:
Jarrett Billingsley wrote:
On Tue, Jul 7, 2009 at 3:49 PM, Jarrett
Billingsley<jarrett.billings...@gmail.com> wrote:
On Tue, Jul 7, 2009 at 3:38 PM, Walter
Bright<newshou...@digitalmars.com> wrote:
Nick Sabalausky wrote:
Someone else said it's also an expression that evaluates to
3, but that seems beyond useless to me.
It's handy when you want to prefix one expression to another,
as in:
(foo(), x + 3)
Cause you want to do that so often, after all.
*snort*
A more constructive reply: tuuuuples. TUPLES. Returning them!
Using them as first-class values! Yes.
Just prepend "tuple" and you're home at a low price.
I can't return tuples. I have to wrap them in a struct.
Yes, the struct is called Tuple and is present in std.typecons. There's
also a function called tuple() that returns a Tuple with deduced
parameters. Try it!
If I do that, then I can't index the struct as if it were a real
tuple. Okay, then I use 'alias this', and I end up with this struct
that exists for no purpose other than to get around a silly
limitation in the type system.
Alias this has vastly more applications. Tuple has alias this commented
out because there are related bugs in the compiler that I didn't get to.
Well, geez! Why not just make tuples first-class?
That would be a fish. We want to learn fishing.
Andrei
