rust-how-do-i-start
cats-effect
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rust-how-do-i-start | cats-effect | |
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10 | 34 | |
979 | 1,954 | |
- | 1.7% | |
0.0 | 9.7 | |
about 1 year ago | 4 days ago | |
Scala | ||
- | Apache License 2.0 |
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rust-how-do-i-start
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Hey rustaceans! I'm interested in learning Rust and I have a few questions before I get started
For (1) try this https://github.com/jondot/rust-how-do-i-start
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Next Steps for Rust in the Kernel
I learned it combining the Book and Rustlings. There's a table in the exercises directory mapping the exercises to the chapters of the book, so I'd every day do the exercises for yesterdays chapter first before todays chapter to have some sort of spaced repetition. For more material, check out https://github.com/jondot/rust-how-do-i-start
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Unable to learn rust.
You can try https://github.com/jondot/rust-how-do-i-start which contains things to try out that I've curated. Cross off things that don't work, and feel free to reach out if none of it work for you.
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Rust project Ideas
I highly recommend taking a look at this github repo, it has many projects and resources to help you!
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Rustlings 5.0.0 · Small exercises to get you used to reading and writing Rust code
Rustlings is great. I did them after a couple of years in Rust for the same reason, and it was definitely worth it. You might want to check out https://github.com/jondot/rust-how-do-i-start as well where I put all these kind of things that I could find.
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I want to start learning rust
If you aren't a complete beginner, then this github repo is VERY useful
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What was your path for learning Rust?
This is mine but also incorporates things I wish I had when I started, and also recommendation from other people as well. https://github.com/jondot/rust-how-do-i-start
- GitHub - jondot/rust-how-do-i-start: Hand curated advice and pointers for getting started with Rust
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What beginner-level projects can I do now that I've just started learning rust?
This was posted this week here: https://github.com/jondot/rust-how-do-i-start
- Answering the "How do I start with Rust?" question with a github repo
cats-effect
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A question about Http4s new major version
Those benchmarks are using a snapshot version of cats-effect. I don't know where that one comes from, but previously they were using a snapshot from https://github.com/typelevel/cats-effect/pull/3332 which had some issues (3.5-6581dc4, 70% performance degradation), which have since been resolved (see that PR for more info and comparative benchmarks).
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The Great Concurrency Smackdown: ZIO versus JDK by John A. De Goes
Recently, CE3 has had similar issues reported across multiple repositories, almost an epidemic of reports!
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40x Faster! We rewrote our project with Rust!
The one advantage Rust has over Scala is that it detects data races at compile time, and that's a big time saver if you use low level thread synchronization. However, if you write pure FP code with ZIO or Cats Effect that's basically a non-issue anyway.
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Sequential application of a constructor?
See also cats-effect and fs2. cats-effect gives you your IO Monad (and IOApp to run it with on supported platforms). fs2 is the ecosystem’s streaming library, which is much more pervasive in functional Scala than in Haskell. For example, http4s and Doobie are both based on fs2.
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Should I Move From PHP to Node/Express?
On the contrary, switching to the functional mindset, with something like Typelevel Scala3 and respective cats and cats-effect fs2 frameworks, helps to rethink a lot of designs and development approaches.
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Next Steps for Rust in the Kernel
I think "better Haskell on JVM" (in contrast to "worse Haskell") is a good identity for Scala to have. (Please note that this is an intentional hyperbole.)
Of course, there are areas where Haskell is stronger than Scala (hint: modularity, crucial for good Software Engineering, is not one of them). And Scala has its own way of doing things, so just imitating Haskell won't work well.
Examples of this "better Haskell" are https://typelevel.org/cats-effect/ and https://zio.dev/ .
All together, Scala may be a better choice for you if you want to do Pure Functional Programming. And is definitely less risky (runs on JVM, Java libraries interop, IntelliJ, easy debugging, etc...).
None of the other languages you mentioned are viable in this sense (if also you want a powerful type system, which rules out Clojure).
I agree that Rust's identity is pretty clear: a modern language for use cases where only C or C++ could have been used before.
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Java 19 Is Out
I would use Scala. I like FP and Scala comes with some awesome libraries for concurrent/async programming like Cats Effect or ZIO. Good choice for creating modern style micro-services to be run in the cloud (or even macro-services, Scala has a powerful module system, so it's made to handle large codebases).
https://typelevel.org/cats-effect/
https://zio.dev/
The language, the community and customs are great. You don't have to worry about nulls, things are immutable by default, domain modelling with ADTs and patter matching is pure joy.
The tooling available is from good to great and Scala is big enough that there are good libraries for typical if not vast majority of stuff and Java libs as a reliable fallback.
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Typelevel Native
What took my interest is this (for both JVM and future multithreaded Scala native): https://github.com/typelevel/cats-effect/discussions/3070 Having the same threads poll available IO events and execute callbacks should improve performance greatly
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Scala isn't fun anymore
The author is the creator of Monix and implemented the first version of cats-effect. He knows what he is doing.
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Question about some advanced types
You want Kernmantle, which quite honestly shouldn't be hard to implement around Cats and cats-effect. In particular, although Kernmantle doesn't require the use of the Arrow typeclass, there happen to be Arrow (actually ArrowChoice) instances for both Function1 from the standard library and Kleisli from Cats itself, given a Monad instance for the Kleilsi's F[_] type parameter. In other words, we should be able to port Kernmantle from Haskell to Scala (with the Typelevel ecosystem) and instantly be able to use pretty much anything else from the Typelevel ecosystem, or wrapped with it, in our workflow graphs. Pure functions, monadic functions, applicative functions, GADTs with hand-written interpreters, any of it. I think this would be eminently worth doing.
What are some alternatives?
winsafe-examples - Examples of native Windows applications written in Rust with WinSafe.
ZIO - ZIO — A type-safe, composable library for async and concurrent programming in Scala
emojied - ✂️ A URL shortener that uses emojis, only emojis.
FS2 - Compositional, streaming I/O library for Scala
cross - “Zero setup” cross compilation and “cross testing” of Rust crates [Moved to: https://github.com/cross-rs/cross]
fs2-grpc - gRPC implementation for FS2/cats-effect
rust-learning - A bunch of links to blog posts, articles, videos, etc for learning Rust
doobie-quill - Integration between Doobie and Quill libraries
rust-by-practice - Learning Rust By Practice, narrowing the gap between beginner and skilled-dev through challenging examples, exercises and projects.
Kategory - Λrrow - Functional companion to Kotlin's Standard Library
kondo - Cleans dependencies and build artifacts from your projects.
Slick - Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala