rust-delegate
rfcs
rust-delegate | rfcs | |
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8 | 666 | |
422 | 5,719 | |
- | 1.1% | |
6.7 | 9.8 | |
5 months ago | 7 days ago | |
Rust | Markdown | |
Apache License 2.0 | Apache License 2.0 |
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rust-delegate
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On inheritance and why it's good Rust doesn't have it
Ah, that answers the first question, as to how inheritance is superior to manual delegation. By the way, this crate seems to do a good job of supporting delegation: https://crates.io/crates/delegate. I have nothing against this in principle.
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Fellow Rust enthusiasts: What "sucks" about Rust?
This is certainly one that's bugged me too. There's the delegate crate which helps, but is still a decent amount of boilerplate due to macro limitations
- Enum variants share Trait while Parent does not - A Better solution?
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Hey Rustaceans! Got a question? Ask here! (44/2022)!
As u/onomatopeiaddx said, it isn't possible since macros only have access to the token tree it is given. I don't see why a newtype wouldn't work tho. and to help with newtypes you may want to have a look at the delegate crate
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The Rust RFC process does not seem as amazing as I initially thought
Macros, probably. For example this one, that was already made by someone else, published on crates.io and is actively maintained. If the feature is already possible in rust, but requires a lot of boilerplate, then macros are the answer 99% of the time.
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Inheritance to composition
delegate crate would reduce some boilerplate.
- Is there a way to append to struct in Rust?
rfcs
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Ask HN: What April Fools jokes have you noticed this year?
RFC: Add large language models to Rust
https://github.com/rust-lang/rfcs/pull/3603
- Rust to add large language models to the standard library
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Why does Rust choose not to provide `for` comprehensions?
Man, SO and family has really gone downhill. That top answer is absolutely terrible. In fact, if you care, you can literally look at the RFC discussion here to see the actual debate: https://github.com/rust-lang/rfcs/pull/582
Basically, `for x in y` is kind of redundant, already sorta-kinda supported by itertools, and there's also a ton of macros that sorta-kinda do it already. It would just be language bloat at this point.
Literally has nothing to do with memory management.
- Coroutines in C
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Uv: Python Packaging in Rust
Congrats!
> Similarly, uv does not yet generate a platform-agnostic lockfile. This matches pip-tools, but differs from Poetry and PDM, making uv a better fit for projects built around the pip and pip-tools workflows.
Do you expect to make the higher level workflow independent of requirements.txt / support a platform-agnostic lockfile? Being attached to Rye makes me think "no".
Without being platform agnostic, to me this is dead-on-arrival and unable to meet the "Cargo for Python" aim.
> uv supports alternate resolution strategies. By default, uv follows the standard Python dependency resolution strategy of preferring the latest compatible version of each package. But by passing --resolution=lowest, library authors can test their packages against the lowest-compatible version of their dependencies. (This is similar to Go's Minimal version selection.)
> uv allows for resolutions against arbitrary target Python versions. While pip and pip-tools always resolve against the currently-installed Python version (generating, e.g., a Python 3.12-compatible resolution when running under Python 3.12), uv accepts a --python-version parameter, enabling you to generate, e.g., Python 3.7-compatible resolutions even when running under newer versions.
This is great to see though!
I can understand it being a flag on these lower level, directly invoked dependency resolution operations.
While you aren't onto the higher level operations yet, I think it'd be useful to see if there is any cross-ecosystem learning we can do for my MSRV RFC: https://github.com/rust-lang/rfcs/pull/3537
How are you handling pre-releases in you resolution? Unsure how much of that is specified in PEPs. Its something that Cargo is weak in today but we're slowly improving.
- RFC: Rust Has Provenance
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The bane of my existence: Supporting both async and sync code in Rust
In the early days of Rust there was a debate about whether to support "green threads" and in doing that require runtime support. It was actually implemented and included for a time but it creates problems when trying to do library or embedded code. At the time Go for example chose to go that route, and it was both nice (goroutines are nice to write and well supported) and expensive (effectively requires GC etc). I don't remember the details but there is a Rust RFC from when they removed green threads:
https://github.com/rust-lang/rfcs/blob/0806be4f282144cfcd55b...
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Why stdout is faster than stderr?
I did some more digging. By RFC 899, I believe Alex Crichton meant PR 899 in this repo:
https://github.com/rust-lang/rfcs/pull/899
Still, no real discussion of why unbuffered stderr.
- Go: What We Got Right, What We Got Wrong
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Ask HN: What's the fastest programming language with a large standard library?
Rust has had a stable SIMD vector API[1] for a long time. But, it's architecture specific. The portable API[2] isn't stable yet, but you probably can't use the portable API for some of the more exotic uses of SIMD anyway. Indeed, that's true in .NET's case too[3].
Rust does all this SIMD too. It just isn't in the standard library. But the regex crate does it. Indeed, this is where .NET got its SIMD approach for multiple substring search from in the first place[4]. ;-)
You're right that Rust's standard library is conservatively vectorized though[5]. The main thing blocking this isn't the lack of SIMD availability. It's more about how the standard library is internally structured, and the fact that things like substring search are not actually defined in `std` directly, but rather, in `core`. There are plans to fix this[6].
[1]: https://doc.rust-lang.org/std/arch/index.html
[2]: https://doc.rust-lang.org/std/simd/index.html
[3]: https://github.com/dotnet/runtime/blob/72fae0073b35a404f03c3...
[4]: https://github.com/dotnet/runtime/pull/88394#issuecomment-16...
[5]: https://github.com/BurntSushi/memchr#why-is-the-standard-lib...
[6]: https://github.com/rust-lang/rfcs/pull/3469
What are some alternatives?
born - Remove code duplication from Struct and Enum with functional macros.
rust - Empowering everyone to build reliable and efficient software.
dislike-in-rust - A list of the few things I don't like about rust
bubblewrap - Low-level unprivileged sandboxing tool used by Flatpak and similar projects
pollster - A minimal async executor that lets you block on a future
crates.io - The Rust package registry
getrandom - A small cross-platform library for retrieving random data from (operating) system source
polonius - Defines the Rust borrow checker.
compiler-team - A home for compiler team planning documents, meeting minutes, and other such things.
Rust-for-Linux - Adding support for the Rust language to the Linux kernel.
SHLL - An experiment of high level code optimization
rust-gc - Simple tracing (mark and sweep) garbage collector for Rust