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A collection of helpers to operate on nested maps. See README for the complete list of helpers. The test suite is also helpful.

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digger lib impl upper_caser map.ex
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lib/impl/upper_caser/map.ex

defimpl Digger.UpperCaser, for: Map do
alias Digger.UpperCaser
def upcase_first(map) do
map
|> Enum.reduce(%{}, fn({key, value}, acc) -> Map.merge(acc, %{UpperCaser.upcase_first(key) => value}) end)
end
end