PostgresDescribe v0.1.4 PostgresDescribe.Config View Source
This module handles fetching values from the config with some additional
niceties. Sourced from
https://gist.github.com/bitwalker/a4f73b33aea43951fe19b242d06da7b9
MIT license as per author.
Link to this section Summary
Functions
Fetches a value from the config, or from the environment if {:system, “VAR”} is provided
Fetches a value from the config, or from the environment if {:system, “VAR”} is provided
Same as get/3, but returns the result as an integer. If the value cannot be converted to an integer, the default is returned instead
Link to this section Functions
get(atom(), atom(), term() | nil) :: term()
Fetches a value from the config, or from the environment if {:system, “VAR”} is provided.
An optional default value can be provided if desired.
Example
iex> {test_var, expected_value} = System.get_env |> Enum.take(1) |> List.first
...> Application.put_env(:myapp, :test_var, {:system, test_var})
...> ^expected_value = Elixir.PostgresDescribe.Config.get(:myapp, :test_var)
...> :ok
:ok
iex> Application.put_env(:myapp, :test_var2, 1)
...> 1 = Elixir.PostgresDescribe.Config.get(:myapp, :test_var2)
1
iex> :default = Elixir.PostgresDescribe.Config.get(:myapp, :missing_var, :default)
:default
Fetches a value from the config, or from the environment if {:system, “VAR”} is provided.
If the environment variable is not set and no preconfigured default is
provided it will raise an ArgumentError
.
get_integer(atom(), atom(), integer()) :: integer()
Same as get/3, but returns the result as an integer. If the value cannot be converted to an integer, the default is returned instead.