strum | A small rust library for adding custom derives to enums | SDK library
kandi X-RAY | strum Summary
kandi X-RAY | strum Summary
Strum is a set of macros and traits for working with enums and strings easier in Rust.
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Community Discussions
Trending Discussions on strum
QUESTION
I made a django application which is online at: https://www.casualspotter.com/. On my homepage I have a carousel with multiple images. The problem I'm having is that for some reason the images don't load fully. After refreshing the page the images do load fully.
The carousel code:
...ANSWER
Answered 2020-Dec-24 at 14:49try this
QUESTION
i am trying tsc build and deploy on genkins. but when add dependency by npm install, it is fail because of node-gyp in bcrypt.
maybe, it is not problem about permission,
gyp: No Xcode or CLT version detected! gyp ERR! configure error
is it mean that need xcode in jenkins insatance?
...ANSWER
Answered 2020-Jul-30 at 05:12it is issue about catalina
QUESTION
I have a question about how a could simplify my code
I am using the crate strum (https://docs.rs/strum/0.17.1/strum/) and my question is how to simplify .iter() (macro EnumIter) to the array number without passing in a for loop
Const file :
...ANSWER
Answered 2019-Dec-31 at 15:22You want Iterator::enumerate
:
QUESTION
I'm receiving an object and pushing to an array. I can see the array in my console.log but still it refuses to map out the li's.
What am I doing wrong?
...ANSWER
Answered 2019-Nov-19 at 16:20The return value of Array.push is
The new length property of the object upon which the method was called.
so, you're basically overwriting data
in your state by the length of the array instead of the array itself,
update your state using data => this.setState(prevState => ({ data: [...prevState.data, data] }))
QUESTION
I am trying to have some sort of list of types which I can then initialize and build genetic algorithms.
The issue is working with "types" themselves, I haven't found the right way to take an array of types and call ::new
on each to get an "instance".
ANSWER
Answered 2019-Oct-21 at 14:52It seems that you have an enum that represents types, and a struct with the same name as an enum variant.
Note that enum variant names have nothing to do with any types they might represent.
In addition, reflections do not exist (not in the Java sense) in Rust, so you can't have a value that contains a type name and create that type from it.
However, it is possible to take an enum of unknown value (the type checker cannot constraint the enum values anyway), and return a value based on this enum.
Furthermore, while a method may not return unknown types directly,
you can use a Box
to wrap a value of unknown type,
or create an enum that implements the trait and delegates to sealed implementations.
The following might be closer to what you wanted:
QUESTION
I'm writing code to initialize a deck with 52 cards and shuffle them. In Java, I use an ArrayList
and iterate through the Suit
enum and the Rank
enum, adding a Card(suit,rank)
object as I go along. I then use Collections.shuffle()
.
I am trying to port this code to Rust, using vectors and structs. The problem is that I can't iterate enums like in Java. What is the Rust idiomatic way of trying to achieve this result?
I have tried importing strum & strum_macros to get enum iteration, but I am stuck with trying to push structs onto the Vec
and then randomly shuffle it.
Java Code
...ANSWER
Answered 2019-Sep-10 at 13:06The key points are:
- bring into scope the required traits for shuffling (
SliceRandom
for rand version 0.7). - bring into scope the required types for the
enum::iter()
Cargo.toml:
QUESTION
I'm currently spiking out a music application with HTML5/JS and am attempting to achieve the lowest latency I can with the MediaStream Recording API. The app allows a user to record music with a camera and microphone. While the camera and microphone are on, the code will allow the user to hear and see themselves.
At the moment I have:
...ANSWER
Answered 2019-Aug-30 at 12:40latency of 0.003 is a very, very low latency (3ms) and not noticeable by human beings ear.
Said that, the latency cannot be 0, when we talk of digital audio. Although you set a very low value, it is not guaranteed that the latency actually match for various reason, in case the system can't match the latency the promise will be rejected.
As you can read here in docs:
Constraints which are specified using any or all of max, min, or exact are always treated as mandatory. If any constraint which uses one or more of those can't be met when calling applyConstraints(), the promise will be rejected.
Notice: different browsers and differents OS behave differently.
Chrome
Chrome, in some canary build introduced a low latency feature called Live Web Audio Input:
QUESTION
When I was adding animation frames into my game, I decidedly made specific folders and titles for each character (for example, character 1 will always look for its attacking frames in its own folder), and I made a variable for it called animation_dir. However, whenever I try to use it in my resources file for my game, it keeps reporting the error:
AttributeError: type object 'Character' has no attribute 'animation_dir'.
I have tried to add a type of instance called charanimationdir = character.animation
but that didn't work at all.
resources file:
...ANSWER
Answered 2019-Jul-08 at 16:52If you've a class
QUESTION
So I got the crazy idea of making my own PC version of Rock Band / Guitar Hero in Unity. To do so, I need to be able to configure the InputManager in order to detect every button.
Through a little trial and error, I've been able to detect input for the color keys as well as the plus and minus buttons. I can't however for the life of me figure out how to get any input from the strum bar or the D-PAD.
I've been trying different combinations of joystick buttons, input types and input axis.
Any suggestions?
...ANSWER
Answered 2019-May-02 at 23:27If ever anyone else runs into this problem, I figured it out.
The correct InputManager configuration for the Strum Bar on a Harmonix Nintendo Wii Rock Band Guitar is joystick button 5, snap: true, Type: Joystick Axis, Axis: 6th Axis (Joysticks).
If this does not work on your guitar, open up the back. The correct button number is written on the chip where the wiring connects.
QUESTION
I want to read enums from a MySQL table, but I'm failing to convert the string enums from the table into real Rust enums.
What options do I have? The documentation tells me that I should implement the FromValue
trait:
Cargo.toml
...ANSWER
Answered 2019-Mar-11 at 15:38As the error message states (cleaned up a bit):
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install strum
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 rust-lang.org for more information.
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