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Rust-chat

I wrote this small chat-like pair of server/client in order to learn Rust (borrow-checker, lifelines, threads, generics). Rust is kinda hard at first glance (lots of syntax) but its approach in tooling and language is extremely interesting.

licecap_recording

screencast asciinema

馃槑 Pros:

  • No GC but memory-safe
  • some good FP constructs (maps for example), nice
  • type-oriented language, no bloated classes or objets
  • polymorphism and generics implemented in a nice way (impl trait) where you can add traits to a foreign type (traits are like interfaces)
  • pretty good type inference but still needs lots of annotations (function params and some generic functions). But I know that inference is hard when using polymorphism

馃槥 Cons:

  • language and tooling is evolving at a fast pace; although transitionning between patch/minor version is often painless, maintaing a Rocket (for example) project is a pain as it uses the nightly channel, which in turn often lacks some tooling randomly (rls mainly)
  • The tooling, primarely rls (Rust Language Server), is young and somehow the types-on-hover doesn't work great (compared to OCaml, ReasonML or even Typescript). Because of the trait stuff, the RLS often doesn't give which methods can be called or stuff like that.
  • Compiler a bit slow compared to Go or OCaml but faster than template-based C++

To test this small POC:

cargo run -- server 9000
cargo run -- client 127.0.0.1 9000
cargo run -- client 127.0.0.1 9000