Introspecting modules at runtime 🔎
Notes
Sometimes we want to introspect things about a compiled module at runtime.
Elixir’s Module module has a lot of functionality but it’s mostly about dealing with modules during compilation time.
Provides functions to deal with modules during compilation time.
Thankfully, Elixir exposes an __info__/1 helper that’s just what we
need!
The function takes a single argument to provide runtime information. Here are its possible values:
:attributes- a keyword list with all persisted attributes:compile- a list with compiler metadata:functions- a keyword list of public functions and their arities:macros- a keyword list of public macros and their arities:md5- the MD5 of the module:module- the module atom name:struct- if the module defines a struct and if so each field in order