Beginner's Guide to Rust Filesystem APIs 🦀 Rust Tutorial

One of the most common operations you'll need, as a Rust developer, is the ability to read and write to the local filesystem. The standard library in Rust provides the essential functions to create / remove / rename directories, create / read / write / delete files, create symlinks, validate filesystem paths, and more. Let's dive into some of the core filesystem functionality provided by Rust!

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[tomaszsosinski]

Hi Trevor, thank you for creating this content. I would like to make one comment about the video. I believe reading raw bytes from file and converting them to chars and string via fold on iterator might be a bit daunting to some viewers. I see the value in it as it shows low level mechanism, however, I would add another minute or two to video to show `std::fs::read_to_string` function that does conversion of bytes to String behind the scenes.

I also think that the video on `std::fs::File` should contain examples on using `std::io::BufReader` to read contents of file to a Vec<String>.

[ojoawojoshua]

This is nice Trevor, but instead of going through the hassle of iterating and creating a closure, there is a method call "read_to_string" on the fs module fs::read_to_string, which does the conversion, so we can have :

pub fn test_read_file() {
let file_path = "./data/test.txt";
let content =

println!("File content: {:?}", content);
}

[GrubyCh]

Small correction for part around 24:07 -> the std::fs::write does return useful info (try to create a file in unexisting directory for example). You only see unit as a result because here the result is actually std::io::Result which always has std::io::Error as Err value. Nice channel btw :)

[muxxxe]

Great video Trevor! I'll be bingeing your channel for the next few months :). Im working towards rust mastery and I love the way you teach! Thank you!

[judevector]

This is really nice, I really learnt and loved how you broke down the reading of file. While going through this video i noticed that using the read method it doesn't read emojis . I also learnt there is also a read_to_string method in the rust documentation

Regardless this is a great video, thanks. I am unto the next one in the playlist ❤

[marlonsbardelatti]

the quality of your content is really great, apreciate it bro

[JOHNSMITH-verq]

Loving this channel bro. The geek vibes are off the charts and it’s beautiful. And super educational!!

[emnul]

Your videos are so thorough I really enjoy that about your content!

[jasperzanjani]

I was about to say you should have used an if let or even a match statement but I guess it's kind of clever avoiding that syntax for the sake of beginners

[AhmedFalih-kjtt]

very exciting video, I really appreciate your videos man, thank you alot

[world-]

Can someone help me? I made a simple rust program that reads a json file and prints the contents. Cargo run works totally fine, but when I run the executable, it says it cannot find the json file, even when it’s in the same directory. I want to be able to make a change to the file, run the executable, and see those changes, so I need the JSON to be separate from the bundled exe. How do I do this? Can’t find any answers online.

But how to read and write binary files like in python with pickle? For example, if İ want to save an object data.

[fedenfer]

Hello brother, greetings from Argentina, are you managing infrastructure with rust? Or do you prefer other languages, such as python or golang?

[crissdell]

Why does use ? At the end of the lines?

[maylay]

perfect an hour on 0.75 playback speed

[aryabp]

please integrate with actix and make google drive clone

[ChidleyITCompute]

This is very helpful. Thankfully rust handles utf8. I learned a lot from this (and your other) video: that's my goal and you're delivering it.