Modules

Modules provide namespaces for things we define. They also act as wrappers for macros, structs, protocols, and other modules. If we want to reference a function defined in a module from outside that module, we need to prefix the reference with the module’s name. We don’t need that prefix if code references something inside the same module as itself, as in the below example.

Run the Mod.func1 or Mod.func2 commands in the terminal below. Don’t forget to start an iex session first with the iex -S mix command.