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Questions tagged [rust-wasm]

121 questions
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How do I make a continuous animation loop with wasm +winit?

I have the following rust code which work when I create a native window: event_loop.run(move |event, _, control_flow| { control_flow.set_poll(); match event { Event::WindowEvent { event:…
Pap113
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Dioxus app failed to load - This is probably due to the Bindgen version, dioxus-cli using `0.2.81` Bindgen crate

I've decided to give Dioxus another shot. This time, I tried launching a recently created Dioxus app, and got the following error: [WARN] Config file: `Dioxus.toml` not found; using default config. [WARN] Config file: `Dioxus.toml` not found; using…
Jose A
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Rust WASM memory.buffer TypeError: Cannot read properties of undefined (reading 'buffer')

I'm learning wasm knowledge recently, and I want to use memory.buffer-related knowledge, but I can't run the content of this chapter smoothly: https://rustwasm.github.io/wasm-bindgen/reference/types/pointers.html Can anyone kindly help me get it up…
Jay
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Twiggy command line options for emcc / emscripten to get meaningful data out

I'm using Twiggy from the Rust Wasm Toolchain to analyse a webassembly package to find largest contributors to code size. Command line option twiggy top -n 20 myWasm.wasm results in a table output like this: Shallow Bytes │ Shallow % │…
Dr. Andrew Burnett-Thompson
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rust wasm convert enum type to string without std or fmt

Is there a stable way to convert rust enum types to strings (and from strings to enum types) without the use of std or fmt? The reason I am asking is because std appears to account for and 'bloat' the final binary size by around 33% (using cargo…
user1709076
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Using a function from a wasm module in JavaScript

I've decided to learn Rust alongside Web Assembly to get into more cloud computing. I'm trying to make a Rust app that connects to a Redis cache and increments a value each time a function is called. I then want to export that function with the…
Reuben
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Invalid route: insertion failed due to conflict with previously registered route: /_trunk/ws

hello I am experiencing this error when I try to execute trunk serve Invalid route: insertion failed due to conflict with previously registered route: /_trunk/ws. my trunk.toml file has the following contets: [build] target = "index.html" release =…
collinsmarra
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Failing to open websocket client connection on both wasm and native builds

I am building out my first Rust client/server application and struggling to get my client/server talking to each other over a websocket connection. Any help would be highly appreciated! Problem Overview I am using axum with axum-login on the…
Bryan Reilly
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Is there a way to configure "exit_on_all_closed" for browser tabs?

I'm currently working on understanding building Rust apps using Bevy in WebAssembly. Under normal circumstances, the exit_all_on_closed variable in the following code allows for the app to close when the window the app is launched in is closed. fn…
tangoti84
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Make DOM load in web_sys

How would I modify this to get the result below? The thing is there is no iterable. I am not sure what I am doing at this point as this code was AI generated. But my desired result it the js code snippet below. use web_sys::{Element,…
collinsmarra
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Leptos router gives a warning which I do not unterstand

I stared to experiment with https://github.com/gbj/leptos/ using the current main branch from Git. Following the router example I get the following warning in my console in the browser: WARNING: You are providing a context of a…
Achim
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How to run Wasm module with podman + crun?

I am trying to use podman to run a Wasm module as shown here, but I keep getting the error "Exec format error". I have a Wasm module named "hellor.wasm" which executes correctly using both wasmer and wasmtime. I am running podman on Rocky Linux…
Tony Iams
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Rust/WebAssembly -- streaming HTTP request: convert JsValue from ReadableStreamDefaultReader.read into vector

I'm new to Rust and trying to implement a web page that shows a graph with many edges. I plan to use WebAssembly to lay out the graph and determine the positions of the nodes (and a WebGL library to draw the graph). Context I want Rust/wasm to make…
Simon Crowe
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Understanding wasm-bindgen returned objects memory management

I'm trying to return a typed object from Rust to Typescript, and I ideally don't want to have to manually manage memory (performance is not the highest priority). While doing this, I'm trying to understand the generated JS. Rust: #[wasm_bindgen] pub…
User
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unknown import: `wasi_snapshot_preview1::sock_setsockopt` has not been defined when running Rust WASI binary

Title says it all - I am attempting to run a very basic Rust program using hyper_wasi, and everything compiles seemingly ok using cargo wasi run. Unfortunately when it actually executes, I get: Error: failed to run main module…
Chris Shain
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