Macro matching

match.ex

defmodule MyMacros do
  defmacro match(values) do
    quoted_values = Enum.map(values, &quote(unquote(&1)))

    quote do
      def match(x) do
        case x do
          #{unquote(quoted_values)} -> true
          _ -> false
        end
      end
    end
  end
end

# yes
defmodule MyModule do
  import MyMacros

  match([:a, :b, :c])
end

MyModule.match(:a) # => true
MyModule.match(:d) # => false