OK. I've gone and grabbed bitc-lang.blogspot.com (bitc was taken), but I
don't have time to set it up properly this morning.


On Tue, Jul 8, 2014 at 7:38 AM, Jonathan S. Shapiro <[email protected]>
wrote:

> Raoul:
>
> I'm afraid you shouldn't hold your breath on this request, but it may help
> that the things you are asking about are mostly orthogonal.
>
> The slippery slopes in subtyping mainly have to do with interactions
> between subtyping and type inference. There is a *huge* research
> literature on this, and the devil is in the details. There are several ways
> to dodge or mitigate the bullets. We're not far enough along in BitC to
> know whether those will work for us yet, which is part of my hesitation. I
> also hesitate because once you commit yourself to dodging a bullet in a
> particular way, that choice will tend to constrain the future ways in which
> the type system of the language can evolve.
>
> If you want to try to get a feel for this, the best source might be
> Benjamin Pierce's book Types and Programming Languages. If you're more
> inclined toward academic papers:
>
> Simple, Decidable Type Inference with Subtyping
> <https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CDMQFjAC&url=http%3A%2F%2Farxiv-web3.library.cornell.edu%2Fpdf%2F1104.3116v1&ei=fgC8U97rGar-igLnIQ&usg=AFQjCNHBxWy_UoSWCzi0aUNwglJY7zIr6w&sig2=rOzL6Uks2pKCTwU1ARpqeQ&bvm=bv.70138588,d.cGE>
>
>
> My personal expectation is that the real killer for inference in BitC is
> going to turn out to be something called kinding. That's an issue that's
> considered too advanced for TAPL to address.
>
>
> As to interfaces, I'm really only aware of two kinds (ignoring BitC): in
> some legacy languages an interface is really a module boundary. Otherwise,
> the Java/C# notion of interfaces seems to be how people do things.
>
> BitC interfaces are probably misnamed. What they really do is existential
> encapsulation, which is why they were originally named "capsules". At some
> point I noticed that they looked a whole lot like interfaces (except for
> the downcast and identity issues) and started calling them that. The
> discussion here on the list strongly suggests that calling them
> "interfaces" probably isn't a good idea.
>
>
> And yes, BitC needs a blog (or better: a CMS). I haven't put one up on my
> machines because of security concerns, and because I don't want the blog to
> detract from the discussions here. It may be time to start one, though.
>
>
> Not sure how helpful this is...
>
> shap
>
>
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