Config.config_env
You're seeing just the macro
config_env
, go back to Config module for more information.
Returns the environment this configuration file is executed on.
In Mix projects this function returns the environment this configuration
file is executed on. In releases, the environment when mix release
ran.
This is most often used to execute conditional code:
if config_env() == :prod do
config :my_app, :debug, false
end