Ibrahim Bagalwa

#RustLang #programming #error_handling #codingtips
🚀 Rustaceans! Let's Talk About the ? Operator! 🚀

Did you know the `?` operator in Rust can simplify your error handling? It automatically propagates errors, making your code cleaner and more readable!

Have you used the `?` operator in your Rust projects? Share your experiences and tips below! 👇

Dec 8, 2024 at 9:12pmWeb
Show threadManpacketDec 8, 2024
@ibrahimbagalwa `?` is secretly a monadic bind operator connecting a general monadic value M<A> (for result this is specialized to Result<A,Error>) with `A -> Result<B, Error>` shaped hole that is the rest of your program. Monads can do much more than just error handling.
Show threadIbrahim BagalwaDec 8, 2024
@manpacket That's a great way to describe it! The ? operator really does simplify chaining in Rust by handling errors seamlessly. Have you used monads in other languages? I'd love to hear how they compare to Rust's approach!
Show threadManpacketDec 8, 2024
@ibrahimbagalwa I did in Haskell, makes it easier to think about composition in general, similar how `?` makes it easy to think about error handling. You can find things inspired by Monads in Rust too: `and_then`, `flat_map` and so on.
Show threadIbrahim BagalwaDec 8, 2024
@manpacket I will have to explore more
Show threadSebastian Imlay 🦀Dec 8, 2024
@ibrahimbagalwa You can use the `?` operator on an `Option<U>` in a function that returns `Option<T>` regardless of what U and T are.