The Sparrow language

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On Wednesday, 6 April 2016 at 13:15:48 UTC, Andrei Alexandrescu 
wrote:
> I just got word about Sparrow (from its creator no less):
>
> presentation_offline_Sparrow.pdf - https://db.tt/m2WwpxIY
> Speak.mp4 - https://db.tt/RDmrlEu7
> ThesisLucTeo.pdf - https://db.tt/1ylGHuc1
>
> An interesting language that shares a lot of D's vision and 
> features. The languages differ in a few aspects: Sparrow has a 
> much more flexible syntax allowing a variety of custom 
> operators. (I happen to disagree that's a good thing as I 
> believe highly flexible syntax easily leads to transmission 
> noise code). On the plus side Sparrow has a smoother 
> integration of compile-time vs. run-time computation, which 
> makes it a bit easier to transition from one to another. 
> Another feature we could consider adding to D is a simple 
> definition of concepts as complex Boolean predicates. That's 
> essentially identical to isForwardRange etc. etc. but makes for 
> simpler use of these predicates.
>
>
> Andrei

Interesting. I've thinking about concepts too. Hopefully they 
could come into D. Actually, I think concept and interfaces could 
be combined into one feature. An interface is just a special case 
of a concept, saying its implementer should have the matching 
function signatures.