Map.get

You're seeing just the function get, go back to Map module for more information.

get(map, key, default \\ nil)

get(map(), key(), value()) :: value()

Gets the value for a specific key in map.

If key is present in map then its value value is returned. Otherwise, default is returned.

If default is not provided, nil is used.

iex> Map.get(%{}, :a)
nil
iex> Map.get(%{a: 1}, :a)
1
iex> Map.get(%{a: 1}, :b)
nil
iex> Map.get(%{a: 1}, :b, 3)
3