Steven Schveighoffer wrote:
On Wed, 15 Jul 2009 13:22:30 -0400, Stewart Gordon <[email protected]>
wrote:
With apologies to Bruno Medeiros....
All this talk about getting D2 finished (and other things like what
comes next) makes me worried. People talk as if D2 is nearing
completion: there are even threads about the coming or even requesting
the release of the finished product that D2 will be.
For a start, finishing D1 off has to come first.
What bugs in D1 are fixed in D2? I think Walter is fixing D1 and D2
bugs in parallel.
I'm not sure OTTOMH, but I'm sure there are some. Nor am I quite sure
of the relevance of this....
I think the expectation that D2 will be released soon is because of
Andrei's book. I didn't search for the thread where he said the date,
and specifically that D2 should be finished by the time the book is
released, but I recall it being sometime this year.
In any case, I highly doubt that D2 will be "finished" by the time the
book is released.
IWC the book'll have to work around the ambiguities in the spec. Maybe
it can be done....
Things are in such a state of flux, and there are so many planned,
but unimplemented, features, especially surrounding pure functions
and multithreading. I would guess that D2 would be in a feature
freeze mode, even if some of the features aren't even implemented,
kind of like contracts are for D1.
<snip>
Contracts have been implemented for as long as I've known D. Are you
thinking of something else, e.g. contract inheritance?
A distinction must be made between a feature freeze and a spec freeze.
In the run-up to 1.0 I pressed for a feature freeze decision to be reached:
http://www.digitalmars.com/d/archives/digitalmars/D/41553.html
This was so that the remaining time could be spent making the spec
complete and consistent and fixing compiler bugs. Once the spec issues
are fixed, a spec freeze can be put in place. This is an issue for
anybody wanting to implement D and for any D tools/libraries to reach
commercial quality. Sadly, nearly three years on, even D1 isn't quite
there yet.
http://d.puremagic.com/issues/show_bug.cgi?id=677
If that's the case, then it leaves the door open to implement those
features (and for edition 2 of the book!), even though D2 is
"finished".
Maybe D 2.0 can be considered feature-frozen in the near future, but I
still feel that this is a bridge we need to get to before crossing it.
And then we'll need to make sure the D 2.0 spec is complete and
consistent before freezing that, but can start work on D 2.1 in the
meantime. The spec freeze on D 2.0 would be part of the definition of
finished in the same way. But let's not let this detract from the task
of finishing D1.
Stewart.
