Maintaining keyword arity is hard

You know, sometimes you just can't bother with explicitly stating what keyword arguments that you want to pass.

	def address_method(city: "Bloomington", state: "IN", street: "123 fake st")
	print x,y,z,"\n"
	end
	input = {city: "Indianapolis", street: "321 faux st", zip: "12345"}
	address_method(input_address) # => ArgumentError: unknown keyword: zip
	addr_mthd = method(:address_method)
	acceptable_keywords = addr_mthd.parameters.select{|p| p[0] == :key}.map(&:last)
	accepted_input = input.select{|(k,v)| acceptable_keywords.include?(k)}
	address_method(accepted_input) # => IndianapolisIN321 faux st

view raw keyword_arg_arity.rb hosted with ❤ by GitHub