D programming language popularity
frederick.muller at existiert.net
Sun Nov 8 17:53:06 UTC 2020
On Sunday, 8 November 2020 at 15:04:33 UTC, Ola Fosheim Grøstad
> Or just ARC, which I would prefer if done with global static
+1 I learned Swift a while ago, mostly because I like the idea of
ARC. (I came to the conclusion that I don't like Swift btw^^).
People often dismiss it because it's slower than tracing GC, but
there is more to it.
Obviously lower memory usage and deterministic destruction.
The real killer feature of ARC is imho that you can use it to
implement value semantics with copy on write.
Swift does it for arrays. Semantically you pass by value, but it
will only duplicate the array if you write to it and the refcount
is greater one.
You can also use this to implement classes with value semantics
(with a little bit boilerplate).
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