Three Ways to Start an Elixir Program

Tzelon Machluf — Fri, 18 Oct 2019 11:43:13 +0000

> elixir source.ex

When you run this command two things happen:

The file source.ex is compiled in-memory, and the resulting modules are loaded to the VM.
Every code outside of a module is executed.

> mix run

When you want to run a project created by mix (mix new project_name)

> mix my_source_file.ex

When you want to load a module to the VM in interactive mode.
Note that code outside of the module will not be executed.

You can also use mix and run a project and load the interactive shell with iex -S mix run

Recompile Elixir Module in iex

Tzelon Machluf — Fri, 18 Oct 2019 11:04:49 +0000

When you want to view your changes for a module iex can recompile it on the fly.

> iex <<path to your file>>

iex> r MyModule