Rust's most wanted feature just arrived!

The wait is over! The highly anticipated feature in Rust has finally landed. In this video, let's delve into the latest addition that the Rust community has been clamoring for.

Chapters:
0:00 Intro
0:12 The feature
1:00 How to use it
1:59 Limitations
3:24 Conclusion

[TheSast]

my most wanted feature is fast compile times 😢

[tacticalassaultanteater]

The problem with dynamic dispatch is that it's kinda infectious. If you want your trait to be object safe, all the traits it consumes or produces have to become trait objects too.

[johanneslade]

Aahhhh, you missed the pun in the title.
Most awaited feature in rust!

[RaijuZer]

BTW traits are like interfaces in C# too, like Java, not like abstract classes. I’ve heard you say that in other videos so pointing out for the future.

[joshuarose]

Hey man, I just wanted to say congrats on getting 100k. It's super awesome to see one of the long-term channels that I've learned so much from get some well deserved reward.

[flippert]

"async fn" and "impl Trait" in traits are just a start, the rust lang team has proposed a whole agenda, what should happen with async rust this year (and probably next year). Only at the end of that journey, async and normal rust can be used interchangeably.

[ringo.gg.]

really cool! Is your paid course going to have an update with this new feature? Maybe with examples or use cases, or are you going to wait till the limitations mentioned on this video are no longer an issue?

[mariocamspam]

0:54 The equivalent of interfaces in C# is... interfaces. C# has them too.

[krtirtho]

I want an official async runtime.
I'm sick if writing rust libraries that has to be compatible with 69 async runtime libraries

[GrantGryczan]

Hey, I'm new to Rust. How can I learn about that `trait X = Y;` syntax at 2:18? I can't recall having seen it before, and my Google-fu is failing me.

[Crozz]

Is this the same thing as an interface method returning a Task<> in C#?

[tgirlshark]

can't wait to make my async trait based entity component system (sadly async traits aren't "send" yet and no dynamic dispatch womp womp)

[daniihh]

I'm surprised you didn't talk about how this feature also depended on GATs which was a whole other milestone unto itself; missed opportunity to talk about how `impl` returns implicitly create anonymous `type` items.

[reed]

Wait, the traits functuons don't have function bodies?

In php our traits have function bodies, but i really shouldn't trust anything php does as the right way.

[superuser]

Rust is becoming the C++ and Java lovechild at this point

[ChyK]

I don't get this "not allowed" syntax: `trait HttpService = LocalHttpService<fetch(): Send> + Send;`
I get the "+ Send" syntax because because I saw such syntax in trait bounds. But the `<fetch(): Send>` part? Does Rust has such syntax now?

[CjqNslXUcM]

it's kinda crazy that they implemented async await in rust. does it use a runtime in the background?

[shadamethyst]

And meanwhile impl trait in type alias (ITTA) is still nowhere getting stabilized, let alone impl trait in associated types (which would have made this feature easier to implement)

[NorthEagle]

Most wanted feature is a simple syntax

[gljames]

My most wanted feature is const float arithmetic functions.