# Welcome to Day 3

Today, we will cover some more advanced topics of Rust:

* Traits: deriving traits, default methods, and important standard library
  traits.

* Generics: generic data types, generic methods, monomorphization, and trait
  objects.

* Error handling: panics, `Result`, and the try operator `?`.

* Testing: unit tests, documentation tests, and integration tests.

* Unsafe Rust: raw pointers, static variables, unsafe functions, and extern
  functions.