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cheap jsp web site hosting As we go through this chapter, adding features to our classes, we'll show just the class definitions for the new methods; the old ones will still be there. It saves us having to repeat redundant stuff in each example. Obviously, though, if you were creating this code from scratch, you'd probably just throw all the methods into a single class definition. Enough detail! Let's get back to adding a to_s method to our Song class. class Song def to_s "Song: #{@name}--#{@artist} (#{@duration})" end end aSong = Song.
cheap jsp web site hosting new("Bicylops", "Fleck", 260) aSong.to_s » "Song: Bicylops--Fleck (260)" Excellent, we're making progress. However, we've slipped in something subtle. We said that Ruby supports to_s for all objects, but we didn't say how. The answer has to do with inheritance, subclassing, and how Ruby determines what method to run when you send a message to an object.
cheap jsp web site hosting This is a subject for a new section, so.... Inheritance and Messages Inheritance allows you to create a class that is a refinement or specialization of another class.
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