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shdblowers/protocol_example.ex

Created October 26, 2018 16:46
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protocol_example.ex
defprotocol Size do
@doc "Calculates the size (and not the length!) of a data structure"
def size(data)
end
defimpl Size, for: BitString do
def size(string), do: byte_size(string)
end
defimpl Size, for: Map do
def size(map), do: map_size(map)
end
defimpl Size, for: Tuple do
def size(tuple), do: tuple_size(tuple)
end
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