SleeplessCityLights comments on What do people love about Rust?

[–] SleeplessCityLights@programming.dev 6 points 10 months ago (6 children)

As someone who uses a lot of shell scripts and learning Rust, do tell more.

parent

[–] Ephera@lemmy.ml 13 points 10 months ago (5 children)

One of the simplest tricks is that you can throw down a function, which you can call with a command like e.g. this: run("cat /etc/os-release | grep NAME")
by constructing a Command like so:

Command::new("sh")
    .arg("-c")
    .arg(command) //the string passed as parameter

There's proper libraries to make running commands even easier and more robust, but if you don't want to pull in a library, that's really easy to write out ad-hoc and gets you 95% of the way there, with shell piping and everything.

permalink

fedilink

source

parent

hideshow 5 child comments

[–] 1984@lemmy.today -2 points 10 months ago (4 children)

You can do this in all programming languages that exist...

permalink

fedilink

source

parent

hideshow 4 child comments

[–] Ephera@lemmy.ml 10 points 10 months ago

Oh yeah, I'm not saying this is what makes Rust special. Rust's strength in comparison to Bash is that it's a lot more competent at control flow and structuring programs. But yeah, virtually any programming language is at least better at that than Bash, so whichever one you're most comfortable with, is probably the best choice. This trick just allows you to make use of Bash's biggest strengths, which is easily running commands and piping between commands, while also having the competent control flow and structuring of your programming language of choice.

permalink

fedilink

source

parent

[–] FizzyOrange@programming.dev 6 points 10 months ago (2 children)

That's kind of the point. You can do it in most languages, so why use a shitty one like Bash? Use a good language like Rust!

Also there are aspects of languages that make many languages less suitable for this application though. For example Python, because you can't use third party dependencies (or at least you couldn't; I think uv has an equivalent of cargo script now). Java would be a pretty awful choice for example.

permalink

fedilink

source

parent

hideshow 2 child comments

[–] 1984@lemmy.today 1 point 10 months ago* (1 child)

Python is actually super known for its batteries included approach, it has modules for everything. Simply do pip install anything. But best practice is to use a python virtual environment and install packages into that one. Cargo does this by itself in each project and doesnt install modules globally.

But python code is so much easier to write. Its basically almost English and the syntax is easy. Rust... Not so much. Its quite ugly.

Its a systems programming language. Designed to be fast to execute. Its one of the slowest to write code in. But sure, with Ai, you can just ask for a rust script and it will run.

permalink

fedilink

source

parent

hideshow 1 child comment

[–] FizzyOrange@programming.dev 3 points 10 months ago

it has modules for everything

Not everything. PyYAML, Pydantic and Typer are things I commonly want in scripts that aren't in the standard library.

Simply do pip install anything. But best practice is to use a python virtual environment and install packages into that one.

It's more than "best practice". It's mandatory on many recent Linux distros. And yeah setting up a venv and installing dependencies is not something you want to have to do for each script you run.

Its one of the slowest to write code in.

It depends what your goal is. If you want robust code that works reliably then I would say Rust has the edge still. Yes it will take longer to write but you'll spend way less time debugging it and writing tests.

permalink

fedilink

source

parent