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A comment on I love building a startup in Rust. I wouldn't pick it again. Parent comment

Re:I love building a startup in Rust. I wouldn't pick it again by legerdemain on Friday February 17, 2023 @03:49PM (#34840361) 

  > You can ingest and emit JSON in any language.
How is this relevant? Serving a JS application to a client is not like serving a JSON API.

  > You can even compile backend-friendly code to run in JS on the frontend, via emscripten (and increasingly, Wasm), which will output very lean and JIT-friendly code.
Not in my experience. Compared to front-to-back JS, shipping your applications as WASM ends up with downloads and memory footprints that are several times larger than the same application in ordinary JS, and this matters a lot for slower networks and mobile clients.

Edit: not to mention that Go has a very limited WASM story, so your "realistic" choices for shipping back end code to the front end are C++ and Rust.

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Re:I love building a startup in Rust. I wouldn't pick it again by d-z-m on Sunday February 19, 2023 @06:32AM (#34856675)
> How is this relevant? Serving a JS application to a client is not like serving a JSON API.

In some JS applications, the way the frontend code communicates with the backend is via JSON API endpoints. I believe GP was just pointing out that you can write that JSON API in any language you want.

> not to mention that Go has a very limited WASM story, so your "realistic" choices for shipping back end code to the front end are C++ and Rust.

Can you elaborate on this? How is it limited in comparison to say, Rust.

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Re:I love building a startup in Rust. I wouldn't pick it again by legerdemain on Sunday February 19, 2023 @01:09PM (#34860150)
My understanding is that to get reasonable WASM file sizes, one must use tinygo (a C reimplementation). tinygo is a WIP, although I wish I could find a better updated description of what's missing than this page on their site: https://tinygo.org/docs/reference/lang-support/
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Re:I love building a startup in Rust. I wouldn't pick it again by d-z-m on Sunday February 19, 2023 @02:22PM (#34860869)
This page[0] seems to have some good information(on stdlib support at least).

As far as file sizes go, you're right. It might be possible to get better results deploying a brotli'd or gzipped file instead[1].

[0]:https://tinygo.org/docs/reference/lang-support/stdlib/ [1]:https://github.com/golang/go/wiki/WebAssembly#reducing-the-s...

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