case-studies
rustfmt
case-studies | rustfmt | |
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11 | 57 | |
1,603 | 5,773 | |
- | 1.1% | |
3.8 | 8.8 | |
about 1 month ago | 6 days ago | |
Rust | Rust | |
Apache License 2.0 | Apache License 2.0 |
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case-studies
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::lending-iterator — Lending/streaming Iterators on Stable Rust (and a pinch of HKT)
Luckily there is a workaround to emulate such a definition, which dtolnay discovered and explained here: https://github.com/dtolnay/case-studies/tree/b9802f6df8dc8e54970b83fb9af6df923b46abf5/unit-type-parameters.
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Hey Rustaceans! Got a question? Ask here! (17/2022)!
I think they are talking about this one trick which the devs don't want you to know about. Note that while it looks like specialization, it works only in a few very limited cases and is quite fragile, so it's a hack, not a substitute for the real feature.
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Any good resources for learning Rust macros?
Also I suggest his case studies repo since you are looking at what is possible: https://github.com/dtolnay/case-studies
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What are some creative/advanced uses of macro_rules?
/u/dtolnay has a great case studies repository.
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Hey Rustaceans! Got an easy question? Ask here (29/2021)!
Once you have the basics down, read dtolnay's case studies. They show how to do advanced stuff with easy macros.
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println use `Debug` if argument is not `Display`
If you were writing your own println macro, you might be able to get away with this kind of hack: https://github.com/dtolnay/case-studies/blob/master/autoref-specialization/README.md
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Hey Rustaceans! Got an easy question? Ask here (11/2021)!
You can use "Autoref-based stable specialization" or use/mimic the impls crate.
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Why I gave up on Rust (for now)
With a subset of specialization likely riding the trains soon and a workaround available, why would you give up?
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Hey Rustaceans! Got an easy question? Ask here (10/2021)!
this works since values and types are in different namespaces (see: Rusts Universes or dtolnay's Case Study about "Unit struct with type parameters")
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Hey Rustaceans! Got an easy question? Ask here (53/2020)!
To do this with traits you would need specialization but since you are using macros you should be able to use "Autoref-based stable specialization". Here is a playground which uses the latter approach to implement the wanted macro without using any nightly features.
rustfmt
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You can't do that because I hate you
The author provides very surface-level criticism of two Rust tools, but they don't look into why those choices were made.
With about five minutes of my time, I found out:
wrap_comments was introduced in 2019 [0]. There are bugs in the implementation (it breaks Markdown tables), so the option hasn't been marked as stable. Progress on the issue has been spotty.
--no-merge-sources is not trivial to re-implement [1]. The author has already explained why the flag no longer works -- Cargo integrated the command, but not all of the flags. This commit [2] explains why this functionality was removed in the first place.
Rust is open source, so the author of this blog post could improve the state of the software they care about by championing these issues. The --no-merge-sources error message even encourages you to open an issue, presumably so that the authors of Cargo can gauge the importance of certain flags/features.
You could even do something much simpler, like adding a comment to the related issues mentioning that you ran into these rough edges and that it made your life a little worse, or with a workaround that you found.
Alternatively, you can continue to write about how much free software sucks.
[0]: https://github.com/rust-lang/rustfmt/issues/3347
[1]: https://github.com/rust-lang/cargo/pull/10344
[2]: https://github.com/rust-lang/cargo/commit/3842d8e6f20067f716...
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Let else will finally be formatted by rustfmt soon
The new style still supports single line let-else, and there is a configuration parameter to make it be on one line also for longer lines.
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Is rustfmt abandoned? Will it ever format `let ... else` syntax?
It seems there is an issue about this dating all the way back from 2018 but yet it still hasn't been fixed.
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Hey Rustaceans! Got a question? Ask here (22/2023)!
However since 4179 recent versions should merge configuration files. Not sure what the details / specifics are but if just ignoring the file entirely is not good enough you might give it its own directory and rustfmt.toml file and see if that works.
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Rustfmt refusing to work with certain functions.
Could this be be #3863 - Gives up on chains if any line is too long? It might not be, because I can't see a specific "line" that's too long to format, but there's more detail about the exact problem in the issue.
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Rust Tips and Tricks #PartOne
Rustfmt is a tool that formats Rust code in compliance with style guidelines. Its name precisely reflects its purpose. To install rustfmt, you can run rustup component add rustfmt. Once installed, you can execute cargo fmt to format Rust code in your workspace. If you require further information, you can visit rustfmt’s GitHub repository.
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What are some good practices when writing rust?
code must be formatted with rustfmt.
- HTML Limpo
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Hey Rustaceans! Got a question? Ask here (5/2023)!
Yes, some cases are not yet supported (https://github.com/rust-lang/rustfmt/issues/4914).
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How do I stop RustFmt from turning this…
Just FYI, the let-else suggestions will only work until rustfmt settles on a format for it. So you may be surprised when this happens and it suddenly changes.
What are some alternatives?
rocket-auth-login - Authentication and login processing for Rust's Rocket web framework. Demonstrates a working example of how to authenticate users and process login as well as how to handle logging out.
Clippy - A bunch of lints to catch common mistakes and improve your Rust code. Book: https://doc.rust-lang.org/clippy/
xargo - The sysroot manager that lets you build and customize `std`
rust-analyzer - A Rust compiler front-end for IDEs [Moved to: https://github.com/rust-lang/rust-analyzer]
proc-macro-crate - `$crate` in procedural macros.
rust-analyzer - A Rust compiler front-end for IDEs
mini-redis - Incomplete Redis client and server implementation using Tokio - for learning purposes only
Rust for Visual Studio Code
parquet2 - Fastest and safest Rust implementation of parquet. `unsafe` free. Integration-tested against pyarrow
vscode-rust
cargo-expand - Subcommand to show result of macro expansion
sublime-rust - The official Sublime Text 4 package for the Rust Programming Language