rust | An implementation of jetlang in rust

 by   jetlang Rust Version: Current License: No License

kandi X-RAY | rust Summary

kandi X-RAY | rust Summary

rust is a Rust library. rust has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

An implementation of jetlang in rust

            kandi-support Support

              rust has a low active ecosystem.
              It has 5 star(s) with 1 fork(s). There are 2 watchers for this library.
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of rust is current.

            kandi-Quality Quality

              rust has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              rust does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              rust releases are not available. You will need to build from source code and install.

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            rust Key Features

            No Key Features are available at this moment for rust.

            rust Examples and Code Snippets

            No Code Snippets are available at this moment for rust.

            Community Discussions


            Concurrent Counter Struct with Type Argument in Rust
            Asked 2021-Jun-15 at 23:55

            I was following along with this tutorial on creating a concurrent counter struct for a usize value: ConcurrentCounter. As I understand it, this wrapper struct allows us to mutate our usize value, with more concise syntax, for example:my_counter.increment(1) vs. my_counter.lock().unwrap().increment(1).

            Now in this tutorial our value is of type usize, but what if we wanted to use a f32, i32, or u32 value instead?

            I thought that I could do this with generic type arguments:



            Answered 2021-Jun-15 at 23:55

            I haven't come across such a ConcurrentCounter library, but is huge, maybe you find something. However, if you are mostly concerned with primitives such as i32, there is a better alternative call: Atomics, definitely worth checking out.

            Nevertheless, your approach of generalizing the ConcurrentCounter is going in a good direction. In the context of operation overloading, std::ops is worth a look. Specifically, you need Add, Sub, and Mul, respectively. Also, you need a Copy bound (alternatively, a Clone would also do). So you were pretty close:



            Rust futures / async - await strange behavior
            Asked 2021-Jun-15 at 20:06

            I am new to rust and I was reading up on using futures and async / await in rust, and built a simple tcp server using it. I then decided to write a quick benchmark, by sending requests to the server at a constant rate, but I am having some strange issues.

            The below code should send a request every 0.001 seconds, and it does, except the program reports strange run times. This is the output:



            Answered 2021-Jun-15 at 20:06

            You are not measuring the elapsed time correctly:

            1. total_send_time measures the duration of the spawn() call, but as the actual task is executed asynchronously, start_in.elapsed() does not give you any information about how much time the task actually takes.

            2. The ran in time, as measured by start.elapsed() is also not useful at all. As you are using blocking sleep operation, you are just measuring how much time your app has spent in the std::thread::sleep()

            3. Last but not least, your time_to_sleep calculation is completely incorrect, because of the issue mentioned in point 1.



            Lifetime of async closure return type
            Asked 2021-Jun-15 at 18:22

            Consider the following code:



            Answered 2021-Jun-15 at 18:22

            i think you are looking for this:



            How to read a file from within a move FnMut closure that runs multiple times?
            Asked 2021-Jun-15 at 16:56

            I'm using glutin and so have a move closure for my program's main loop and I'm trying to play an audio file with the rodio crate. With the following code everything works and I get one beep every time the program loops:



            Answered 2021-Jun-15 at 16:27
            The Problem

            Basically, the problem at hand is that rodio::Decoder::new consumes the value which it reads from (well, actually it is already consumed by BufReader::new). So, if you have a loop or a closure that can be called multiple times, you have to come up with a fresh value each time. This what File::open does in your first code snipped.

            In your second code snipped, you only create a File once, and then try to consume it multiple times, which Rust's ownership concept prevents you from doing.

            Also notice, that using reference is sadly not really an option with rodio since the decoders must be 'static (see for instance the Sink::append trait bound on S).

            The Solution

            If you think your file system is a bit slow, and you want to optimize this, then you might actually want to read the entire file up-front (which File::open doesn't do). Doing this should also provide you with a buffer (e.g. a Vec) that you can clone, and thus allows to repeatedly create fresh values that can be consumed by the Decoder. Here is an example doing this:



            Trait with constructor that takes borrows to borrows cannot infer liftime on usage
            Asked 2021-Jun-15 at 13:38

            I need a trait that allows me to construct a object that borrows an object that borrows something. In the following example that is PaperBin.



            Answered 2021-Jun-15 at 13:38

            Your immediate issue is that T: GarbageBin<'a, 'b> where 'a and 'b are parameters of create_bin_with_rubbish and must therefore outlive calls to that function—but the actual lifetimes passed to T::new are only internal to the function and do not therefore satisfy those bounds.

            Instead of parameterising create_bin_with_rubbish with lifetimes 'a and 'b, one way to resolve this would be to use instead an HRTB (higher-ranked trait bound):



            Can a function take both IntoIterator and IntoIterator<&T>?
            Asked 2021-Jun-15 at 12:28

            I want a function that takes two arguments, both of which can be turned into an iterator of Foo. The snag is that I'd like to accept things which are both IntoIterator and also IntoIterator<&Foo>. Importantly Foo is Copy so I can cheaply create an owned copy from it's reference.

            The solution I currently have is:



            Answered 2021-Jun-15 at 12:22

            First of all, you don't need exactly IntoIterator bound here. It's just enough for Iterator.



            How to get a lowercase &str vec?
            Asked 2021-Jun-15 at 12:17

            I was wondering if i could return a Vec<&str> type from to_lowercase() below?

            Here is my code:



            Answered 2021-Jun-15 at 11:42

            This is not possible. The reason is that converting a Unicode String to lowercase/uppercase may need to reallocate the String, as case folding within Unicode might need more/fewer characters and/or bytes to encode the folded variant.

            Either you can return a Vec, where the new String holds the conversion. Or, if you are sure that your input is pure ASCII, you take use make_ascii_lowercase to do the conversion in-place; this has the downside that if proper Unicode folding requires more/less characters/bytes, no folding takes place.



            Why are lifetime specifiers not required [sometimes] in Rust for generics?
            Asked 2021-Jun-15 at 11:03

            I was looking at the Microsoft Rust guide and while reading the generics chapters, I came across the following problem.

            Consider the two following pieces of code:



            Answered 2021-Jun-14 at 12:47


            Deserializing redis's Value in Rust (FromRedisValue)
            Asked 2021-Jun-15 at 09:55

            I'm implementing a simple task queue using redis in Rust, but am struggling to deserialize the returned values from redis into my custom types.

            In total I thought of 3 approches:

            1. Deserializing using serde-redis
            2. Manually implementing the FromRedisValue trait
            3. Serializing to String using serde-json > sending as string > then deserializing from string

            The 3rd approach worked but feels artificial. I'd like to figure out either 1 or 2, both of which I'm failing at.

            Approach 1 - serde-redis

            I have a simple Task definition:



            Answered 2021-Jun-15 at 09:55

            Redis doesn't define structured serialization formats. It mostly store strings and integers. So you have to choose or define your format for your struct.

            A popular one is JSON, as you noticed, but if you just want to (de)serialize simple pairs of (id, description), it's not very readable nor convenient.

            In such a case, you can define your own format, for example the id and the description with a dash in between:



            Go WASM export functions
            Asked 2021-Jun-15 at 09:04

            I want to create a .wasm file which still has the function names exported when compiled.



            Answered 2021-Jun-15 at 09:04

            If you plan to write a lot of WASM in Go, you might want to consider compiling with TinyGo, which is a Go compiler for embedded and WASM.

            TinyGo supports a //export or alias //go:export comment directive that does what you're looking for.

            I'm copy-pasting the very first example from TinyGo WASM docs:


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


            No vulnerabilities reported

            Install rust

            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.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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