You can use emscripten to generate fairly minimal code output. Consider the following trivial file adder.c: int adder (int a, int b) { return a + b; } Compile it like this (requires a fairly recent emscripten): emcc -O2 -s WASM=1 -s SIDE_MODULE=1 -o adder.wasm To see what it generated, disassemble it to wast textual … Read more
In the WebAssembly Minimal Viable Product the only way to call into and out of WebAssembly is through imports and exports. In the future, WebAssembly may gain capabilities which allow the embedder expose APIs directly, in a browser embedding this could include the DOM. Imports and exports aren’t very complicated though: from your C code’s … Read more
Keep secure — WebAssembly is specified to be run in a safe, sandboxed execution environment. Like other web code, it will enforce the browser’s same-origin and permissions policies. So the short answer is — yes, there are restrictions. You have no access to files on disks. You just have block of memory, WASM code could … Read more
Yes it’s absolutely possible. Blazor does not have a monopoly on C#/WASM and it’s far from clear that it’s going to wind up being the best long term option (and a lot of evidence it’s not). I recommend starting with the Uno WASM Bootstrap. https://github.com/unoplatform/Uno.Wasm.Bootstrap 2022-06-30 Edit – More evidence Blazor is not the only … Read more
Andreas describes a number of good reasons why the JavaScript implementation was initially observed to be x300 faster. However, there are a number of other issues with your code. This is a classic ‘micro benchmark’, i.e. the code that you are testing is so small, that the other overheads within your test loop are a … Read more
You are invoking it deconstructed: await NewDayScrolledIntoView.InvokeAsync((p1, p2, p3)); When the event is received deconstruct it then: <ShiftCardScroller NewDayScrolledIntoView=”@((args)=> NewDayInView(args.Item1,args.Item2,args.Item3))” />
One possible workaround is to use instantiate() instead of instantiateStreaming(), since the former doesn’t care about MIME types (while the latter does). To use instantiate(): async function fetchAndInstantiate() { const response = await fetch(“http://localhost:3000/simple.wasm”); const buffer = await response.arrayBuffer(); const obj = await WebAssembly.instantiate(buffer); console.log(obj.instance.exports.add(1, 2)); // “3” }
1) To the best of my knowledge as of early Nov, 2017 you are correct: there is no commonly available way to compile Swift to WebAssembly. Maybe some enterprising hacker somewhere has made it happen but if so she hasn’t shared her code with us yet. 2) In order to enable Wasm support you will … Read more
I have recently started using Web Assembly for some of my projects. I am doing this because I heard that wasm is faster than javascript. WebAssembly is faster than JavaScript, but only for certain use-cases. With WebAssembly your browser has to do less work to download and compile your code, giving it faster start-up times. … Read more
There are a few ways that you can detect the presence of WebAssembly. The basic one is to check whether WebAssembly if of type “object” in the global scope, but “global scope” is a tricky thing to get to in different JavaScript environments (main browser thread, worker, node.js). Doing so is also not technically sufficient … Read more