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Discussion on: Rust #7: Command-Line interfaces

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Ken Snyder

Great stuff Matt. I've been wanting to dip into Rust and have thought a CLI might be a good way to put a toe in. This post makes the process seem much more approachable. Thanks for taking the time to put pen to paper.

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Ken Snyder

BTW, completely random question but wondering if you've had the chance to use Rust to transpile Markdown to HTML? I remember seeing a crate a while back that looked to have amazing performance characteristics and with a lot of SPA's, blogging frameworks, etc. having this capability but almost all using Javascript to do it ... I was just wondering what kind of performance benefit Rust might bring.

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Ken Snyder

Final post in my "random post series" ... in terms of immediately useable use-cases for Rust I think the CLI is a real winner but the other one is Rust's ability to produce WebAssembly. I was looking around at crypto code for a project and I'm starting to think that a Rust-to-WA version of AES's GCM might be higher performance (almost surely) and possibly smaller payload (my visibility is limited). The example I saw did not implement GCM though (and it's the only one in web crypto that support verification) and so I'm feeling a bit intimidated at hitting crypto for my first foray into Rust. :)

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Matt Davies Author

I don't have much experience with WASM and Rust or with Crypto crates. WASM is definitely something I want to explore and write a blog article about.

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Matt Davies Author

No, I haven't mainly because it's already been done. You may want to check out the mdbook project. cargo install mdbook will install it for you. Rust has the same performance as C roughly so compared to JS, much much faster.

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Ken Snyder

I just want to see if the parsers that are out there offer a decent plugin eco-system as I could see this being really useful for pre-rending a big content site's build process but I'd definitely need to hook into the conversion process and it would be be great if some plugins already existed so I didn't have to write it all myself. Anyway, once i get to my main computer I'll have a look at mdbook and see how I fair. Thanks for the pointer.

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Ken Snyder

Wow, looks like it's all there. Very neat. Hope I don't get too deep into a rabbit hole. :)

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Matt Davies Author

That's part of the fun.

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Matt Davies Author

Here's an idea for a CLI to get a taste for Rust. Try implementing a hex dump program. You need CLI arguments for the filename. Perhaps you can add a --colour option for outputting the offsets, hex codes and ASCII output in different colours. It might be fun.