Le 23/09/2012 22:40, Andrei Alexandrescu a écrit :
I discussed this with Walter, and we concluded that we could deprecate
the comma operator if it helps tuples. So I started with this:
http://www.prowiki.org/wiki4d/wiki.cgi?LanguageDevel/DIPs/DIP19
Unfortunately, I started much cockier than I ended. The analysis in
there fails to construct a case even half strong that deprecating the
comma operator could significantly help tuples. Well it essentially
concludes that tuples are mostly fine as they are, and attempts to
embellish them syntactically are marred with unexpected problems.
Nevertheless, I sure have missed aspects all over, so contributions are
appreciated.
Thanks,
Andrei
This is a problem I think about for a while, and coding for SDC +
studying how it is done in other languages has enlightened me on some
points.
I all for deprecating the comma operator. You have my full support on
that point. As well as you have it for the « for » construct update.
However, I'm not sure about everything you propose to implement tuples.
I could discuss idea about 1 element tuples, or other tricky cases that
deserve discussion (and I'm sure they will).
But first, let me digress. D is already a really good language. One of
its main flaw is the lack of 3rd party tools. The way new feature are
implemented is a real problem for 3rd party tool developers. In other
terms, the arm done by adding new feature is greater than any benefit
new feature can bring us.
Additionally, we have some open mess that need to be closed. Think about
the -property madness, the holes in const/immutable transitivity, or
other half buggy features.
I consider that , operator should be deprecated then removed ASAP. It
will limit the amount of code possibly broken in the future.
But let's not introduce any new feature before at least introducing a
versioning scheme that allow user to keep the version without the feature.
