Paul Cantrell
@alter_kaker
Seems like Rust is amazing if you have the problems it solves, and if you don’t have those problems, you really wonder what the heck it’s doing.
“Rust but make everything Arc” is kind of Swift. If you want Rust’s rock-solid type system and enums and performance but are willing to sacrifice a little performance not to fight the borrow checker, Swift is lovely! And Linux support at this point is pretty solid.
Yeshaya Lazarevich
@inthehands looking into it. A couple of things I'll miss: Optional is an enum, no exception throwing. The latter of course is a matter of style, but I hate having to catch library exceptions
Paul Cantrell
@alter_kaker
Both are true of Swift as well. Optionals are heavily sugared, and what I think are some really brilliant ways, but underneath it’s just an enum. There are no exceptions; errors are values. It doesn’t quite have the perfect interrupt between errors and Result that I might wish for, but it is an exception-free language.
Yeshaya Lazarevich
@inthehands interesting, they don't seem to advertise it in the docs
Paul Cantrell
@alter_kaker
If you’re reading the tutorial/guide, I’m sure they don’t advertise. It’s a good tutorial, but it’s there to help newcomers get comfortable and not to explain the language’s structure. The reference manual gets more into that.
If you want to dig into how Swift implements optionals, you might find this exercise that I give my p-lang students useful: https://github.com/mac-comp381/swift-optional-desugaring
Yeshaya Lazarevich
@inthehands I landed on Rust because learning a new language felt overwhelming. And what do you know, for a change I'm working together with the borrow checker instead of fighting it! No unexpected mutation of something passed by reference.... It turns out that command pattern with undo is a problem that the borrow checker solves 🙂
You did get me curious about Swift, though. For when I'm feeling a little better.
Paul Cantrell
@alter_kaker
I’m glad it’s working for you! I have heard people say that there’s a moment with Rust where the borrow checker kind of clicks, and suddenly seems a lot more reasonable. Enjoy the project, and send me Swift questions if you ever poke at it!
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