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.