Cldr.Map.deep_merge

You're seeing just the function deep_merge, go back to Cldr.Map module for more information.
Link to this function

deep_merge(left, right, resolver \\ &standard_deep_resolver/3)

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Deep merge two maps

Examples

iex> Cldr.Map.deep_merge %{a: "a", b: "b"}, %{c: "c", d: "d"}
%{a: "a", b: "b", c: "c", d: "d"}

iex> Cldr.Map.deep_merge %{a: "a", b: "b"}, %{c: "c", d: "d", a: "aa"}
%{a: "aa", b: "b", c: "c", d: "d"}