2y ago

Just starting off with Rust, this has been the best resource for feeling comfortable with the language. author @fasterthanlime

Day 1 (Advent of Code 2022)

cross-posted from: https://sh.itjust.works/post/5850736

This is the resource I've been looking for. I'm working my way through the book but it gets in the weeds really early. It's all fun and games and then chapter 4 just hits like a brick wall. Amos does a tremendous job explaining the why behind things, in a more wheels to the pavement way.

Rust Programming @lemmy.ml

MonkCanatella @sh.itjust.works

2y ago

Just starting off with Rust, this has been the best resource for feeling comfortable with the language. author @fasterthanlime

fasterthanli.me /series/advent-of-code-2022/part-1

12 comments

Yeah, all of Amos's content is gold. I highly recommend his executable packer series if you get into systems work - very interesting stuff.
- The blog and videos are great. His constant stream of thoughts from Mastodon might be too much Amos content in my life though.
I've just started learning Rust, mostly by experimenting with winapi since that what's I'm mostly going to use it for anyway, but this finally explains why I had so much trouble with trying to intuitively winging it. I've skimmed through the Rust book once, but judging by this article it's no wonder I was mostly wrestling the compiler.
Looks like I have to go back to the drawing board. I understand why is Rust doing it, and I'm sure that once I finally get used to it, it's going to be a way smoother experience, but maan, this is the first language I couldn't just figure out in an hour. It's a frustrating learning experience, but I also see why it's neccessary and love it for that.
- I've had a few challenging moments for sure but I'm really loving it. I come javascript mostly with a fair amount of ruby experience, and C++ dating back to college. C++ was by far more difficult to learn, but this was like 15 years ago and learning resources have changed drastically since then. To me Rust feels like low level Ruby. I think it takes some good DX cues from Ruby.
  
  I've been mostly working in C# for the past few years (and most of my life), and the only C++ experience I have is from college, so it's getting some using to. And that's what I was getting at - thanks to college, where I was forced to really learn (or at least, understand and be able to use) a wide range of drastically different languages, from Lisp through Bash, Pharo, Prolog, to Java and C#, that when I have to write something in a language I don't know, it's usually similar to at least one of them and I always could figure it out intuitively.
  With Rust, even though it has an amazing compiler, I'm struggling - probably because of the borrowing and overly careful error handling being concepts I've never had to deal with to get a MVP code working. Sure, that probably means that the code wasn't error-proof, which is exactly what Rust forces you to do and which is amazing, but it makes it a lot harder to just write a single script without prior knowledge when you have to.
  I hope they are teaching Rust at universities now, we definitely didn't have it 8 years ago, which is a shame.
Oh man ... I haven't learnt rust myself, but this fits with my sterotyped impression of it ... wanna read a file ... well, let's just wrestle with the type system and compiler for half an hour first!
Not a criticism ... I get the value of the type system and all that, but as an introduction to the language, diving into all that straight away before you do any actual computation is probably not the best way to go.
- Static types aside, the file system has a lot of failure cases, which every language is affected by, and Rust makes them very visible. This can indeed feel like a lot, but it's an intentional feature and makes more sense in larger projects. I guess the feeling may get amplified by the author's style of long form posts with a lot of details.
  Error handling in practice contains a lot of "let the caller deal with it", using the ? operator to pass errors up the call stack. The more verbose options are for when you need to actually handle it.
  
  the file system has a lot of failure cases
  Oh for sure, like I said this makes a lot of sense. All I was saying was that as a pitch for learning the language, the part after the file read had been sorted was much more compelling and interesting.
- Yes, not to knock the book because it is really well done, but it gets theory deep before you're able to apply that theory in a way that makes it make sense. It's like someone describing the theory of gravity to you to teach you how to play basketball
  
  Yea I can imagine.
  I'm a pretty big believer in understanding the problem that needs solving before understanding the solution. I'd imagine that gets a bit tricky with rust because the compiler is just not gonna let you run the "problematic" program.
  Now that I'm thinking this out loud ... maybe a good way to learn rust would be by using and contrasting it with another language to see what rust is giving you that the other language doesn't. Most are probably coming to rust from knowing a few languages already too.

12 comments