Linked list

About

This is a linked list implementation in Rust with some bells and whistles made for training purposes:

• A Cons struct that resembles the head | tail consing/pattern matching in languages such as Lisp or Haskell
• A linked_list! macro for quickly creating a pre-filled list
• Iterators

Inspired by the Too many linked lists book.

unsafe code

Internal implementation uses raw pointers for jumping around nodes to work around Rust's strict lifetime constraints.