title: Ruby: No Block Given error
body: <p>I keep getting a 'no block given' error when trying to pass the string to the is_tut? method.  I am new to Ruby and have no idea what I'm doing wrong.  Any and all help would be appreciated.</p>
  
  <pre><code>class Tut
  @@consonants = ["b","c","d","f","g","h","j","k","l","m","n","p","q","r","s","t","v","w","x","y","z"]
  
    def is_tut? string
      if string =~ /^(([b-df-hj-np-z]ut)|([aeiou\s])|[[:punct:]])+$/i
        yield
      else
        false
      end
    end
  
    def self.to_tut string 
          string.each_char do |c|
              c += "ut" if @@consonants.find { |i| i == c.downcase }
              yield c
          end
      end
  
      def self.to_english string
          array = string.split //
          array.each do |c|
              if @@consonants.find { |i| i == c.downcase }
                  array.shift
                  array.shift
              end
              yield c
          end
      end
  
  
  end
  
  #Tut.to_tut( "Wow! Look at this get converted to Tut!" ) { |c| print c }
  # should output : Wutowut! Lutookut atut tuthutisut gutetut cutonutvuteruttutedut tuto Tututut!
  
  puts
  puts
  
  tut = Tut.to_tut( "Wow! Look at this get converted to Tut!" )
  puts "from return: #{tut}"
  
  puts
  
  #Tut.to_tut( "Wutowut! Lutookut atut tuthutisut gutetut cutonutvuteruttutedut tuto Tututut!" ) { |c| print c }
  # should outout : Wutowut! Lutookut atut tuthutisut gutetut cutonutvuteruttutedut tuto Tututut!
  puts
  puts
  
  #tut = Tut.to_tut( "Wutowut! Lutookut atut tuthutisut gutetut cutonutvuteruttutedut tuto Tututut!" )
  #puts "from return: #{tut}"
  
  puts
  
  #tut_string = ""
  #Tut.to_tut( "I'm in tut but I want to be in english." ) { |c| tut_string += c }
  #puts tut_string
  # should output : I'mut inut tututut bututut I wutanuttut tuto bute inut enutgutlutisuthut.
  
  puts
  
  #Tut.to_english( tut_string ) { |c| print c }
  # should output : I'm in tut but I want to be in english.
  </code></pre>