Im confuse in rust concepts from enums to everyother. Your videos are great when i try to implement these on my side it gets hard. can you tell me some exercises which helps me clearing concepts in rust about each topic?
Hello thanks for sharing your experience with Rust. I would recommend taking what you learn in these videos and adapt it to a different use case. For example, if I use an animal as an example, change it to a vehicle instead. Or a plane with departure / arrival times and locations, or a train that has a schedule. Make sense? Just think of something in the real world and then try to model it using Rust structs and methods.
Hello, sorry I still don't understand traits why can't we use the below code? struct Pet { first_name: String, pet: T, } struct Dog {} impl Dog { fn make_sound(self) { println!("bark!"); } } struct Cat {} impl Cat { fn make_sound(self) { println!("meow!"); } } fn main() { let dog1 = Dog {}; let cat1 = Cat {}; let p1 = Pet { first_name: "dog".to_string(), pet: dog1, }; let p2 = Pet { first_name: "cat".to_string(), pet: cat1, }; p1.pet.make_sound(); p2.pet.make_sound(); } why do we need traits when using implementation block works?
That's a great question! Generics and Traits offer some similar functionality. However, the benefit with traits is that you can focus on object behaviors rather than the types themselves. In your example, a crocodile also makes a sound, but a crocodile is not a pet. So if you need to access common behavior across dogs, cats, and crocodiles, using the Pet type doesn't make sense, because crocodiles aren't pets. Instead, you would define a trait called "MakesSound" (or whatever name you want) and then declare the make_sound() function in that trait. There's nothing wrong with using generics, as long as they fit your use case. Traits just give you another mechanism to deal with different types. I hope this helps!!
Trevor, could you implement an enum as a trait for the pets and have the enum have all of the pets? Also, I wanted to say, thank you. This might be the best video on traits and generics I have ever seen.
This really solidified my understanding. By far the best explanation. Your examples and pace is perfect, also the fact that you didn't conform to the typical(pun intended) use of T and U etc.
Most ambitious? I'm not sure about that, but for starters, think about some CLI tools you could use. What about building web APIs, to call from automation scripts? For example, a TUI (Terminal User Interface) that helps you manage Kubernetes clusters, maybe? What kinds of technologies do you work with, and what could you simplify?
Benchmarking tools would be another great use case for Rust, since it's a high performance language. For example, build a Postgres or MySQL benchmarking tool to compare performance in different configurations.
@bothwellw Unfortunately no, I don't have a GitHub repository for the samples. I encourage people to write the code out for themselves, to learn how things work. It's good exercise.
