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Revision: 13414
at April 23, 2009 07:22 by wdso
Initial Code 
class Symbol
  def to_proc
    proc {|obj, *args| obj.send(self, *args) }
  end
end

# map takes a block, & causes the interpreter to invoke to_proc on given symbol
# symbol is passed as message to the object beeing processed
# in other words, this is a short way of writing:
# list = words.map {|x| x.capitalize }
list = words.map(&:capitalize)
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                                        Initial Description
                                        

                                    

                                    
Extracted from "The Ruby Way: Solutions and Techniques in Ruby Programming."

                                

                                                            

                                    

                                        

                                        Initial Title
                                        

                                    

                                    
Iterator shortcut using symbols

                                

                                                            

                                    

                                        

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                                        Initial Language
                                        

                                    

                                    
Ruby