rust-clippy | catch common mistakes and improve your Rust code | Code Analyzer library

 by   rust-lang Rust Version: rust-1.70.0 License: Non-SPDX

kandi X-RAY | rust-clippy Summary

kandi X-RAY | rust-clippy Summary

rust-clippy is a Rust library typically used in Code Quality, Code Analyzer applications. rust-clippy has no bugs, it has no vulnerabilities and it has medium support. However rust-clippy has a Non-SPDX License. You can download it from GitHub.

A bunch of lints to catch common mistakes and improve your Rust code

            kandi-support Support

              rust-clippy has a medium active ecosystem.
              It has 9505 star(s) with 1245 fork(s). There are 81 watchers for this library.
              It had no major release in the last 6 months.
              There are 1695 open issues and 3826 have been closed. On average issues are closed in 465 days. There are 78 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of rust-clippy is rust-1.70.0

            kandi-Quality Quality

              rust-clippy has no bugs reported.

            kandi-Security Security

              rust-clippy has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              rust-clippy has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              rust-clippy releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            rust-clippy Key Features

            No Key Features are available at this moment for rust-clippy.

            rust-clippy Examples and Code Snippets

            No Code Snippets are available at this moment for rust-clippy.

            Community Discussions


            Clippy complaining on strict f32 comparison
            Asked 2021-Jan-24 at 19:03

            I have a test assertion that looks like this



            Answered 2021-Jan-24 at 19:03

            Ok so I've copied and altered the assert_eq macro a bit



            Clippy redundant allocation lint
            Asked 2020-Oct-12 at 09:37

            So I have this trait and a struct that implements it:



            Answered 2020-Oct-12 at 09:37

            You can wrap a trait object in a Rc as well, since Rc is also a pointer.

            Therefore if you have Rc>, you have two allocations: One for the T and one for the Box (another pointer, that now is on the heap). Instead, use Rc to only have one allocation.



            How to switch between rust toolchains
            Asked 2019-Oct-04 at 00:29

            rustup help toolchain lists the following sub-commands



            Answered 2019-Oct-04 at 00:29

            Use rustup default to change the default toolchain. You can use the full name (e.g. rustup default stable-x86_64-unknown-linux-gnu) or a short alias (e.g. rustup default stable).

            rustup also has methods to override the default in a more scoped manner. See Override precedence in rustup's README.



            Why does Clippy suggests passing an Arc as a reference?
            Asked 2019-Apr-10 at 14:47

            I am checking Clippy findings in my code and found that the pedantic rule needless_pass_by_value might be a false positive.

            It says that:

            warning: this argument is passed by value, but not consumed in the function body

            help: consider taking a reference instead: &Arc>

            Since cloning the Arc is only reference counting, moving the Arc should not be bad idea. Does it really make any difference in terms of quality and performance to send a reference instead of a value for the Arc ?



            Answered 2019-Apr-08 at 15:18

            Calling arc_taker(arc.clone()) increments the reference count, and returning from arc_taker decrements it again. This is useless in this case, since the arc variable of main already keeps the Arc alive during the entire call. A reference to it would already suffice. No need to bump the reference count up and down.

            In your specific example, arc_taker doesn't even care that it is managed by an Arc. All it cares about is that there is a Mutex to lock, so to make your function less restrictive, just take a &Mutex instead.

            If you wanted to do any Arc-specific things to it, like getting the weak_count or something, taking a &Arc<..> would make sense. If your function would keep a clone of the Arc around, only then it would make sense to take an Arc by value, because then the caller can decide to give you an additional reference to it by calling .clone() (thus bumping the reference count), or to give you ownership of its own Arc (and thus not bumping the reference count).



            How to disable a clippy lint for a single line / block?
            Asked 2019-Mar-28 at 18:13

            I am getting some Clippy lints that look like this:



            Answered 2019-Mar-28 at 16:57

            The docs state you can allow or deny lints.



            Is there any difference between matching on a reference to a pattern or a dereferenced value?
            Asked 2018-Jun-30 at 02:30

            Clippy warns about code like this:



            Answered 2018-Jun-30 at 02:30

            Yes, these are the same to the compiler. In this case, there's not much benefit. The real benefit comes from the match equivalent:



            How to pass a Arc with a trait as a reference?
            Asked 2018-Feb-18 at 14:37

            How can I pass a reference to Arc so that the following code compiles successfully?



            Answered 2018-Feb-18 at 12:51

            You can pass a reference to an Arc's content instead.



            How do I fix Clippy's needless_range_loop for loops that copy between slices with an offset?
            Asked 2017-Jun-15 at 13:44

            When running cargo clippy, it complains about code like this:



            Answered 2017-Jun-15 at 10:56


            Is there a simpler way to run clippy on my build script?
            Asked 2017-Jan-05 at 14:16

            In a Cargo project, I can easily run clippy on my src code using this command:



            Answered 2017-Jan-05 at 13:55

            There are two ways to use Clippy: the cargo clippy command and the clippy compiler plugin. cargo clippy detects the build script as a dependency of the main project, so it doesn't load the compiler plugin.

            Therefore, the other option is to use the compiler plugin directly. The instructions for doing this are in clippy's README. We need to make a few adaptations for using it on the build script, though.

            First, we need to add clippy as a build dependency:


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install rust-clippy

            You can download it from GitHub.
            Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer for more information.


            Projects that intend to support old versions of Rust can disable lints pertaining to newer features by specifying the minimum supported Rust version (MSRV) in the clippy configuration file.
            Find more information at:

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