Rust's Most Important Containers 📦 10 Useful Patterns
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- เผยแพร่เมื่อ 21 ต.ค. 2022
- A walkthrough and explanation of 10 useful patterns involving Rust's Option and Result containers.
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The complexity progression through the video is super helpful, great format, you should do more like this one.
Thanks, very happy the format worked for you! Will definitely create more.
Clicked on video blazingly fast
Me too
Same
Yeah... Same....
Honestly, i couldn't get my head wrap around on these error handlings before but not anymore . Thank you so much!!!
It's sooo useful in Rust to read through and practice the Option, Result, and slice functions. They show up everywhere, and the standard library provides loads of useful functions.
💯 agree!
Great video, as always :D One think which is also worth mentioning is that, you can implement `From` trait on your custom error type and use question mark operator.
Example:
```
#[derive(Debug)]
struct SummationError;
impl From for SummationError {
fn from(_: ParseIntError) -> Self {
SummationError
}
}
[...]
fn sum_str_vec(strs: &[String]) -> Result {
let mut acc = 0;
for s in strs {
acc += to_int(s)?;
}
Ok(acc.to_string())
}
```
This really helped me a lot. the functions and containers are so similar it's nice to have a run through these patterns.
Great video. I've only started learning Rust recently and just the other night a light bulb went on in my head as to the whole point of Result and unwrap. This video was therefore great timing for me.
Nice thisisscotts! Really happy you found it valuable!
Although I have been fiddling with programming for decades in my teens, when rust came out I was so bothered, like why all these unwraps and whatnot?
Then I took computer science, and one of the modules taught about these optionables and nullables (yes, java) and also a custom "Result" wrapper we had to make. My professor hated nulls. It was hilarious because my other mod would use and abuse nulls.
It was actually to teach the concepts of monads.
Now when i watch this video, I laugh at myself because this video makes it so clear and easy what these things are.
This video was very insightful! Thank you for sharing, as someone new to rust, seeing all the Option and Result helper methods demonstrated with such simplicity is very helpful.
I would have wrote match patterns all over the place instead because I didn’t know about these functions, thanks again !
Great Jaime, I'm really happy you found it valuable! Thanks for watching!
Amazing exposition of the ways to handle simple errors like this one. I myself thought the introduction of the problem at 1:46 was a little too fast, but that became clear in immediately afterwards.
Thanks WombatGuru, and thanks for the feedback! I did blow through the explanation of the the program really quickly, I'll break it down a bit more next time!
One of the best videos I've seen about these for someone like me that's just learning Rust
That was excellent details on Result and Option. Thank you!
thanks really happy you found it valuable!
As a rust beginner, I've now watched this video about 6 times over the course of the last week. It's an excellent reference! Thanks! 🙏🏼
love this!! glad it's been valuable!
My first exposure to Results and Options were at my internship where I was writing C# based on the railway-oriented programming paradigm. My goodness, I love not dealing or worrying about nulls, and Rust handles this form of error handling so beautifully.
BEST VIDEO !!! THIS WAS THE ONLY THING THAT KEPT ME FROM UNDERSTANDIGN RUST !
glad you found it valuable!
These containers are so fundamental to the language.
Agree 💯
Loved the video, it was extremely insightful and easy to digest for a beginner like me. I hope you make more of these!
Wow. Great video! It gave me new tools to handle errors aside from 'match' and 'if let' It certainly will improve my future code readability. Thank you!
Thanks, glad you found it valuable!
No matter how much you think you already know, you always learn from those kinds of videos. I didn't know about map_err and, guess what, ended up using it today 🙂
Keep up with the amazing work!
Nice, glad you got something useful out of it! Thanks for the kind words!
I needed map_err yesterday and this popped up on suggestions today. Guess I'll fix that unwrap today!
Each video I watch from this channel makes me less angry with Rust. 🤝
nice! mission accomplished 😎
Thanks for this very useful progression of code examples. As a complete beginner found it super useful to watch the video a few times before I could internalize the utility of Result and Option and the .ok , .unwrap and .err families of functions
Great Video. I wish there were more people making videos about Rust.
thanks! and me too.
So helpful - I've seen all these variants in code (I'm a beginner) but couldn't keep them straight in my head. Seeing you build them up from ground level straightened it out for me. Thank you!
Great explanation! Thanks a lot!!!
My third day into Rust and watching your video and crust of rust’s video, I am very excited about Rust. Thank you and keep making more patterns related videos. It’s very helpful specially for intermediate/experienced developers to get started quickly.
Great video! I was writing a toy program in rust to learn and went through almost the same evolution. It was actually frustrating because I didn't know if I should be returning result/option or using 'if let' vs match vs unwrap_or. I was assuming there is a correct (idiomatic) way, but couldn't ever figure out what that was.
Thanks for putting this out. This was very insightful for newbies like me. 🙏
Just brilliant. Thank you so much.
Love your videos, but one small point of improvement; use #[test] functions instead of using main for testing. Test functions are really useful for just trying out stuff, and the examples they provide dont need to be deleted just to make room for "better" code
Thanks for the feedback! Yeah this would have made sense - I've been relentless about eliminating as much prerequisite knowledge as possible, maybe to a fault. You could certainly argue that writing tests is reasonable prerequisite knowledge.
Thanks, the question mark was extremely helpful to replace some of my now redundant match clauses.
nice, really happy you got something out of it!
This is super helpful, I didn't know about that last one you showed. Thank you!!
Glad you found it valuable, thanks for watching Chris!
Excellent video! Would love to see more pattern videos like this to add to the toolbox
Thanks JammyJ, more are on the way (I'm a poet and I didn't know it)!
Great video! Learnt few new things, please keep making them
Thanks gorudonu, more to come!
awesome. Thank you man!
I've definitely been overusing Option when I should be using Result, thanks for your examples.
nice, really happy the video helped!
Really helpful video to understand t OK(), ? and map() functions. Please keep making such videos.
Thank me so much for helping me through handling errors in Rust. You deepened my knowledge 🙌
Insanely good and concise explanation. Thanks. You definitely know how to explain things.
Thanks, really happy you found it valuable!
Really great video about the subject. Thanks a lot!!!
thanks glad you got something out of it!
Valuable information! Look forward to your videos always! As I’m currently learning rust
Thanks drama, glad you found it valuable!
Exactly what I needed, thanks!
great, glad you found it valuable!
This is a great video! The example and the explanation done extremely well! I like how you explain hard things.
omg this was so useful! Thank you for good videos :)
I’m new to Rust. Awesome video, super useful. Thank you!
Great, glad you got something out of it! 😎
I wish I had this video when I was first starting out with Rust. Great video!
this cleared things up thanks
Wow, that was a useful video compressed in a few minutes. Thanks!
thanks, really happy it was helpful!
Great video. I like how it is structured
Thanks Hupa1a, cool to see that folks enjoy the format. I really having one core piece of code, then changing it slightly many times to demonstrate different concepts
It's so nice !!!! pretty much thanks to your share!!!
Thanks for the kind words and thanks for watching!
been using similar concepts for year in Typescript via fpts. Now am getting into rust and am so glad I did because it's immediately clear to me what all this stuff is.
This is a such a good informative video, i wish i found it sooner!
Thanks. This practice examples are great!
Thanks preeby, glad you found it valuable!
Very helpful, thanks!
thanks, glad you got something out of it!
Excellent video! Great tempo.
Thanks Eric, glad you found it valuable!
Thanks again for another great video. It has definitely improved my confidence in knowing how to read and write Rust code. Looking forward to more awesome content.
Very insightful content! Thank you for this.
Thanks for watching Ed!
super helpful, thanks a lot
glad you found it valuable, thanks for watching!
Awesome thanks great video.
Great video. Bookmarked it. Will likely go back to it many time in the future ;) Thanks
Thanks Miriam, I hope it provides evergreen value for you!
Brilliantly structured, getting me excited to get started with Rust!
thank you, very happy it fueled your fire to learn Rust!
Thanks, great explanation :)
thanks for watching, glad you found it valuable!
Nice explanation for monads from functional languages. Keep up! Thanks!
Thanks for watching Artem! I managed to do it without using the word "monad" - not sure if that's a good or a bad thing 🙃
excelent video thanks you!!
This was very interesting and very clearly explained. Thank you
thanks, glad you found it valuable!
Great density of information in this video
Thanks Matthew!
That keyboard sound on 2x, music to my ears!
thanks! it sounds like many folks like the sound of the keyboard, so I actually put a mic up to it in the "Rust vs 7 Languages" video. Might try to do that more in the future.
Was just reading about that in the rust book two days ago. Great timing!
Nice!
Very helpful!
Glad you found it valuable Glenn!
wow! awesome! thanks
Thanks for watching!
Great video! Really good and understandable structure.
Thanks mivoe99, glad you found it valuable!
This was an awesome video. Please do more
Really great tutorials, keep them up!
thanks Olly!
Thanks!
Pretty good explanation, I subscribed because of this video.
very well explained!
thank you, glad you got something out of it!
Very educational!
glad you found it valuable!
Very useful instructions
That’s really well explained. I’m sharing it to a friend that want to learn Rust.
Thanks Robin, and thanks for sharing it!
thanks for this useful tutorial
glad you found it valuable, thanks for watching!
In that use case, you can use .or(SummationError) instead of .map_err(|_| SummationError) method.
The best! I need more of this please! BTW, it would be more handy if you mention thiserror and anyhow in the end. 👍👍👍
Thanks Todsaporn, I'll do more like this. I also plan to do some kind of "Crate Hall of Fame" series where we tour some of the more ubiquitous crates like the ones you mentioned
Great tutorial! Subscribed :)
Fantastic !!!
Thanks Mohith!
It would be nice if those 10 patterns got indexed or simply numbered in the video :)
Thanks for the feedback, I may add numbers / titles in the future!
rly rly great I loving all rust lectures form awesome people here in yt
Thanks glad you liked it!
Maaaan, really throughout. WHat a nice video, wow. I'm impressed. THanks
thank you, glad you got something out of it!
super helpful
glad you found it valuable!
Incredible content, keep up!
thanks so much, glad you found it valuable!
You are awesome. Thanks for the excellent content!
thanks for the kind words!
This video was incredibly well made, it is hard to match. Thank you for the great content.
thanks so much for the kind words!
Man, you've addressed my inner angry funcy npc at 2:28 🤣
this is great. would also be great to follow up with a part to on From and when it's appropriate. i've learned enough to know how to do that but not when it's appropriate or preferred
Thanks Madeline, I'll add From into() the video idea list!
Well done 👍
Thanks Joel!
What theme is this, I really need this. I think I'll probably die without this theme :)
Sonokai! My current favorite...
@@codetothemoon Thanks, that is awesome. Did you tweak the Colors or what?
Can you share your version please
Hey, there is one thing I'm wondering. Is it good or bad practice to return a polymorphic dyn error type? I had one side project recently where so many different types of errors could occur that I just ended up using Result
Great video :D
amazing content (as always)
that was great! This is exactly something I struggled with as a Rust beginner but coming from other languages.
Thanks Telflora!
9:20 I would use the previous variant since it makes it clear I just don't add anything to accum if there is an error. This way I'm adding something which might be zero. It's not as obvious and maybe even less performant.
I've programmed c# for over 15 years, and rust only outside of work. I love your explainations of what's happening in rust.
thanks, really happy you're getting something out of the videos!
Thank You
Thanks for watching!