Modules

A way of grouping methods, classes and constants together.

• provides a namespace, preventing name clashes
• implement the mixin facility

Namespaces

Allow the creation of libraries of related routines.

• break this library into multiple files
  • often code will be organized by classes (one class per file)
  • sometimes things don't naturally fit into a class

require

Loads the given name, returns true if successful, false if already loaded, error if it doesn't load.

• if the filename does not resolve to an absolute path, it will be searched for in the directories listed in $LOAD_PATH