Topic: Rust

Backlinks

• Set metadata in Rust using attributes
  • Attributes are a general-purpose way to set metadata for various structures in Rust. They use #[...] syntax.
• Topic: Programming Languages
  • Rustlang
• Cast between numeric types in rust with as
  • Rust allows basic type-casting using the as keyword. Place as following the type you wish to cast:
• Notes
  • Rustlang
• Rust operators can be extended by implementing Traits
  • It's possible to use Rust's built-in operators with your own types by implementing the correct Traits. For example, in order to use + you can implement core::ops::Add.
• Rust tests can return Result
  • Rust fns marked with the #[test] attribute can return a Result, but must explicitly declare the return type to make this happen. The test will fail on receiving an Err.
• Traits and Typeclasses
  • To the best of my knowledge, the idea of traits in rust is based on the idea of Typeclasses found in Haskell and other pure functional languages. I'm not certain on how they differ, but the idea of stating the equivalent of an interface and then letting data structures implement that interface while wiring up the details under the hood is common.