@spec deep_merge(map(), map()) :: map()

Merges two maps into one, including sub maps. Matching keys from the right map will override their corresponding key in the left map.

@spec mime_type(file_type()) :: mime_type()

Standardize file type definitions by deferring to the official media type of the file based on a supplied extension.

@spec to_atom_keys(map()) :: map()

Convert a map with string keys to one with atom keys. Will convert keys nested in a sub-map or a map that is part of a list. Ignores existing atom keys.

examples

Examples

iex> SmartCity.Helpers.to_atom_keys(%{"abc" => 123})
%{abc: 123}

iex> SmartCity.Helpers.to_atom_keys(%{"a" => %{"b" => "c"}})
%{a: %{b: "c"}}

iex> SmartCity.Helpers.to_atom_keys(%{"a" => [%{"b" => "c"}]})
%{a: [%{b: "c"}]}

@spec to_string_keys(map()) :: map()

Convert a map with atom keys to one with string keys. Will convert keys nested in a sub-map or a map that is part of a list. Ignores existing string keys.

examples

Examples

iex> SmartCity.Helpers.to_string_keys(%{abc: 123})
%{"abc" => 123}

iex> SmartCity.Helpers.to_string_keys(%{a: %{b: "c"}})
%{"a" => %{"b" => "c"}}

iex> SmartCity.Helpers.to_string_keys(%{a: [%{b: "c"}]})
%{"a" => [%{"b" => "c"}]}