ruby 2.0.0

ruby.rb

#!/usr/bin/env ruby

def sample(hoge: 'arg1', fuga: 0)
  puts "hoge => #{hoge}"
  puts "fuga => #{fuga}"
end

sample(hoge: "XXX", fuga: "YYY")
 #=> hoge => "XXX"
 #=> fuga => "YYY"