Rust's Most Important Containers 📦 10 Useful Patterns

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A walkthrough and explanation of 10 useful patterns involving Rust's Option and Result containers.
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21 окт 2022

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Комментарии : 344

@gdnight Год назад

The complexity progression through the video is super helpful, great format, you should do more like this one.

@codetothemoon Год назад

Thanks, very happy the format worked for you! Will definitely create more.

@swanandx Год назад

Clicked on video blazingly fast

@TON-vz3pe Год назад

Me too

@PBaraik Год назад

Same

@ZantierTasa Год назад

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.

@codetothemoon Год назад

💯 agree!

@AreQ212 Год назад

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()) } ```

@SomethingSomething1337 Год назад

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 !

@codetothemoon Год назад

Great Jaime, I'm really happy you found it valuable! Thanks for watching!

@farzadmf Год назад

One of the best videos I've seen about these for someone like me that's just learning Rust

@oglothenerd 7 месяцев назад

In that use case, you can use .or(SummationError) instead of .map_err(|_| SummationError) method.

@TheWombatGuru Год назад

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.

@codetothemoon Год назад

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!

@theuberlord7402 Год назад

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.

@dimiutube 9 дней назад

Good explanation about how to elegantly deal with unexpected behaviours! Thanks for that!!

@codetothemoon 9 дней назад

thanks, glad you found it valuable!

@thisisscotts Год назад

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.

@codetothemoon Год назад

Nice thisisscotts! Really happy you found it valuable!

@Yadobler Год назад

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.

@johnyepthomi892 Год назад

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.

@MrKeebs Год назад

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!

@codetothemoon Год назад

Nice, glad you got something useful out of it! Thanks for the kind words!

@LKamii 11 месяцев назад

I needed map_err yesterday and this popped up on suggestions today. Guess I'll fix that unwrap today!

@richardlyon67 6 месяцев назад

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!

@bassam.2023 2 месяца назад

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! 🙏🏼

@codetothemoon 2 месяца назад

love this!! glad it's been valuable!

@MythBusting Год назад

Loved the video, it was extremely insightful and easy to digest for a beginner like me. I hope you make more of these!

@aussieexpat Месяц назад

This really helped me a lot. the functions and containers are so similar it's nice to have a run through these patterns.

@harijayaram Год назад

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

@Drama-ck2tp Год назад

Valuable information! Look forward to your videos always! As I’m currently learning rust

@codetothemoon Год назад

Thanks drama, glad you found it valuable!

@avi7278 Год назад

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.

@adammontgomery7980 Год назад

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.

@yumbuboyumbubo8230 Год назад

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!

@codetothemoon Год назад

Thanks, glad you found it valuable!

@bibiert45454ifwehgweifhgiwe 6 месяцев назад

Thank me so much for helping me through handling errors in Rust. You deepened my knowledge 🙌

@VictorYarema Год назад

Insanely good and concise explanation. Thanks. You definitely know how to explain things.

@codetothemoon Год назад

Thanks, really happy you found it valuable!

@kavehtehrani 2 месяца назад

That was excellent details on Result and Option. Thank you!

@codetothemoon 2 месяца назад

thanks really happy you found it valuable!

@sunitjoshi3573 5 месяцев назад

Thanks for putting this out. This was very insightful for newbies like me. 🙏

@chris.davidoff Год назад

This is super helpful, I didn't know about that last one you showed. Thank you!!

@codetothemoon Год назад

Glad you found it valuable, thanks for watching Chris!

@silentrandom Год назад

Really helpful video to understand t OK(), ? and map() functions. Please keep making such videos.

@mystica7284 Месяц назад

Honestly, i couldn't get my head wrap around on these error handlings before but not anymore . Thank you so much!!!

@Dygear Год назад

I wish I had this video when I was first starting out with Rust. Great video!

@fightndreamr Год назад

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.

@cheebadigga4092 6 месяцев назад

Thanks, the question mark was extremely helpful to replace some of my now redundant match clauses.

@codetothemoon 6 месяцев назад

nice, really happy you got something out of it!

@plato4ek 5 месяцев назад

This is a great video! The example and the explanation done extremely well! I like how you explain hard things.

@IJammyJI Год назад

Excellent video! Would love to see more pattern videos like this to add to the toolbox

@codetothemoon Год назад

Thanks JammyJ, more are on the way (I'm a poet and I didn't know it)!

@gorudonu Год назад

Great video! Learnt few new things, please keep making them

@codetothemoon Год назад

Thanks gorudonu, more to come!

@jacques-dev Год назад

I've definitely been overusing Option when I should be using Result, thanks for your examples.

@codetothemoon Год назад

nice, really happy the video helped!

@datag 5 месяцев назад

Wow, that was a useful video compressed in a few minutes. Thanks!

@codetothemoon 5 месяцев назад

thanks, really happy it was helpful!

@ryanlog 3 месяца назад

BEST VIDEO !!! THIS WAS THE ONLY THING THAT KEPT ME FROM UNDERSTANDIGN RUST !

@codetothemoon 2 месяца назад

glad you found it valuable!

@engdoretto Год назад

Great explanation! Thanks a lot!!!

@dahliaspumpski5837 Год назад

Brilliantly structured, getting me excited to get started with Rust!

@codetothemoon Год назад

thank you, very happy it fueled your fire to learn Rust!

@TheRedbeardster Год назад

Nice explanation for monads from functional languages. Keep up! Thanks!

@codetothemoon Год назад

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 🙃

@Gruby7C1h Год назад

Exactly what I needed, thanks!

@codetothemoon Год назад

great, glad you found it valuable!

@starlordcodes Год назад

Great Video. I wish there were more people making videos about Rust.

@codetothemoon 11 месяцев назад

thanks! and me too.

@robinmoussu Год назад

That’s really well explained. I’m sharing it to a friend that want to learn Rust.

@codetothemoon Год назад

Thanks Robin, and thanks for sharing it!

@hupa1a Год назад

Great video. I like how it is structured

@codetothemoon Год назад

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

@patricksporl8080 Год назад

Was just reading about that in the rust book two days ago. Great timing!

@codetothemoon Год назад

Nice!

@right_jehoon Год назад

omg this was so useful! Thank you for good videos :)

Год назад

Really great video about the subject. Thanks a lot!!!

@codetothemoon Год назад

thanks glad you got something out of it!

@meartur 4 месяца назад

I’m new to Rust. Awesome video, super useful. Thank you!

@codetothemoon 4 месяца назад

Great, glad you got something out of it! 😎

@preeeby Год назад

Thanks. This practice examples are great!

@codetothemoon Год назад

Thanks preeby, glad you found it valuable!

@NeatMemesDotCom 8 месяцев назад

Each video I watch from this channel makes me less angry with Rust. 🤝

@codetothemoon 8 месяцев назад

nice! mission accomplished 😎

@JohnnyVestergaard73 Год назад

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

@codetothemoon Год назад

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.

@edbienes Год назад

Very insightful content! Thank you for this.

@codetothemoon Год назад

Thanks for watching Ed!

@oleksandrkovalov1543 6 месяцев назад

Just brilliant. Thank you so much.

@recarsion Год назад

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

@mattlau04 5 месяцев назад

This is a such a good informative video, i wish i found it sooner!

@miriamramstudio3982 Год назад

Great video. Bookmarked it. Will likely go back to it many time in the future ;) Thanks

@codetothemoon Год назад

Thanks Miriam, I hope it provides evergreen value for you!

@honeywu6862 Год назад

It's so nice !!!! pretty much thanks to your share!!!

@codetothemoon Год назад

Thanks for the kind words and thanks for watching!

@patto2k358 Год назад

this cleared things up thanks

@John223 Год назад

This was very interesting and very clearly explained. Thank you

@codetothemoon Год назад

thanks, glad you found it valuable!

@ErikSchierboom Год назад

Excellent video! Great tempo.

@codetothemoon Год назад

Thanks Eric, glad you found it valuable!

@katopz Год назад

The best! I need more of this please! BTW, it would be more handy if you mention thiserror and anyhow in the end. 👍👍👍

@codetothemoon Год назад

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

@RustNinja Год назад

awesome. Thank you man!

@pyrochlore Год назад

Very helpful, thanks!

@codetothemoon Год назад

thanks, glad you got something out of it!

@mivoe99 Год назад

Great video! Really good and understandable structure.

@codetothemoon Год назад

Thanks mivoe99, glad you found it valuable!

@CaioCodes 8 месяцев назад

This video was incredibly well made, it is hard to match. Thank you for the great content.

@codetothemoon 8 месяцев назад

thanks so much for the kind words!

@0xSLN Год назад

That keyboard sound on 2x, music to my ears!

@codetothemoon Год назад

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.

@snk-js Год назад

rly rly great I loving all rust lectures form awesome people here in yt

@codetothemoon Год назад

Thanks glad you liked it!

@rmiddlehouse Год назад

These containers are so fundamental to the language.

@codetothemoon Год назад

Agree 💯

@mads7401 Год назад

Thanks, great explanation :)

@codetothemoon Год назад

thanks for watching, glad you found it valuable!

@ollydix Год назад

Really great tutorials, keep them up!

@codetothemoon Год назад

thanks Olly!

@techzoneplus Год назад

super helpful, thanks a lot

@codetothemoon Год назад

glad you found it valuable, thanks for watching!

@minimaddu Год назад

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

@codetothemoon Год назад

Thanks Madeline, I'll add From into() the video idea list!

@Teflora Год назад

that was great! This is exactly something I struggled with as a Rust beginner but coming from other languages.

@codetothemoon Год назад

Thanks Telflora!

@jeanbarbosa9 2 месяца назад

Pretty good explanation, I subscribed because of this video.

@catsgotmytongue Год назад

I've programmed c# for over 15 years, and rust only outside of work. I love your explainations of what's happening in rust.

@codetothemoon Год назад

thanks, really happy you're getting something out of the videos!

@Felipe-53 Год назад

Maaaan, really throughout. WHat a nice video, wow. I'm impressed. THanks

@codetothemoon Год назад

thank you, glad you got something out of it!

@davidraymond8994 Год назад

Awesome thanks great video.

@jambangpisang5809 Год назад

It would be nice if those 10 patterns got indexed or simply numbered in the video :)

@codetothemoon Год назад

Thanks for the feedback, I may add numbers / titles in the future!

@glennmiller394 Год назад

Very helpful!

@codetothemoon Год назад

Glad you found it valuable Glenn!

@polares8187 Год назад

This was an awesome video. Please do more

@soapbubblesx 8 месяцев назад

Awesome video, thank you

@codetothemoon 8 месяцев назад

Glad you liked it!

@zencephalon Год назад

Great density of information in this video

@codetothemoon Год назад

Thanks Matthew!

@fayaz2956 Год назад

wow! awesome! thanks

@codetothemoon Год назад

Thanks for watching!

@NamasteProgramming Год назад

Great, didn't know Option and Result share this functionality

@porky1118 Год назад

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.

@DavidGarcia-xz1ui 10 месяцев назад

Thanks!

@jacklong2182 Год назад

thanks for this useful tutorial

@codetothemoon Год назад

glad you found it valuable, thanks for watching!

@IqweoR Год назад

Very educational!

@codetothemoon Год назад

glad you found it valuable!

@303pix 9 месяцев назад

very well explained!

@codetothemoon 9 месяцев назад

thank you, glad you got something out of it!

@leighwanstead3254 Год назад

Very useful instructions

@danny_p466 Год назад

Great tutorial! Subscribed :)

@CemKavuklu Год назад

Great content! Thank you very much. 2 quick suggestions: 1. May be use a teleprompter to avoid REM during the video 🙂 2. You might want to consider either adjusting the font size in VSCode terminal or use a separate terminal to run the code. It is near impossible to follow what's going on there.

@irlshrek Год назад

id rather he focus on spitting more of these videos out!

@codetothemoon Год назад

Thanks Nexus, this is great feedback! Re: Looking offscreen, yeah this was a huge mistake that I noticed too late! Not doing that again haha. Re: terminal, yeah I'll look into this. I think I may have left the font size massive from something else I was doing, will look into toning it down a bit 🙃

@CemKavuklu Год назад

@@irlshrek While I agree that the content is excellent and I certainly would like to see more, I also want him to have more quality videos so that they got even more views and enable him to spit out even more content. I sense a recursion ahead 🙂

@Wysumay Год назад

Incredible content, keep up!

@codetothemoon Год назад

thanks so much, glad you found it valuable!

@Felipe-53 Год назад

You are awesome. Thanks for the excellent content!

@codetothemoon Год назад

thanks for the kind words!

@mariownyou Год назад

What theme is this, I really need this. I think I'll probably die without this theme :)

@codetothemoon Год назад

Sonokai! My current favorite...

@mariownyou Год назад

@@codetothemoon Thanks, that is awesome. Did you tweak the Colors or what?

@mariownyou Год назад

Can you share your version please

@ad9633 Год назад

Great video. May I ask what VS code theme you're using?

@artursradionovs9543 Год назад

Thank you for a video! Whats the best way to pick up this programming language? The learning curve is quite steep 😮 Even to develop a basic CRUD app along with Actix, makes a headache?

@codetothemoon Год назад

Thanks Arturs! I think the best way is to come up with a project (one that might be easy for you to build in some other language) and build it in Rust. I agree the learning curve is a bit steep but for many people it is worth it. I think a basic actix CRUD app is fairly straightforward (relatively speaking) and is probably a good place to start.

@frazuppi4897 Год назад

amazing content (as always)

@michawhite7613 Год назад

You can remove the call to map_err at the end by implementing From for SummationError

@Ruhrpottpatriot Год назад

Yes, he could, but that's introducing a new concept (type conversions) into the mix. Also: MapError is the functional pattern to the "From/Into" concept.