An object evolutional mutator

life.rb

class Life
	attr_reader :object, :methods, :arguments, :result
	
	def initialize(object:, methods:, arguments:, result:)
		@object, @methods, @arguments, @result = object, methods, arguments, result
	end
	
	def evolve
		(1..max_length).each do |size|
			method_chains(size).each do |method_chain|
				mutation = mutate(method_chain)
		  	return method_chain if mutation == result
			end
		end
	end
	
	private
	
		def object
			@object.dup
		end
		
		def method_chains(size)
	  	permuted_methods(size: size).product(permuted_arguments(size: size))
	  end
	
	  def mutate(method_chain)
	  	args = method_chain[0].zip(method_chain[1])
	  	args.inject(object) { |o, a| o.send(*a) rescue nil }
	  end
	
	  def max_length
	  	[@methods, @arguments].max{ |a,b| a.length <=> b.length }.count
	  end
	
	  def permuted_methods(size:)
	  	@methods.repeated_permutation(size).to_a
	  end
	  
	  def permuted_arguments(size:)
	  	@arguments.repeated_permutation(size).to_a
	  end
end

transcode = Life.new(
	object: "\xAE",
	methods: %i{encode force_encoding},
	arguments: [::Encoding::UTF_8, ::Encoding::ISO_8859_1],
	result: "®"
)

transcode.evolve