D and Async I/O

[Russel Winder]

On Tue, 2020-05-12 at 09:57 +0000, Sebastiaan Koppe via Digitalmars-d-learn
wrote:
[…]
> 
> Yeah it is a shame, but you see it in almost every language. 
> Probably means concurrency and io isn't a fully solved problem 
> yet.

Whilst C frameworks use callbacks and trampolines, high level languages seem
to be basing things on futures – or things that are effectively isomorphic to
futures. Concurrency and parallelism will never be solved problems I suspect,
but I think there is a fairly good consensus now on what is state of the art.
D as a language is lagging, and this is sad.

[…]
> 
> I think there are a lot of lessons to be learned from all the 
> efforts in the programming community.
> 
> We should:
> 
> - get stackless coroutines
> - get structured concurrency
> - steal as many idea from the C++'s executors proposal 
> (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p0443r13.html)

I am not convinced C++ has the best "state of the art" in this respect – after
all it is just copying what JVM languages have had for ages, and Rust updated
for modern native code languages. But yes, if D doesn't get something in the
async/await style then its future (!) is non-existent. :-(

-- 
Russel.
===========================================
Dr Russel Winder      t: +44 20 7585 2200
41 Buckmaster Road    m: +44 7770 465 077
London SW11 1EN, UK   w: www.russel.org.uk

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