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cheap jsp web hosting services subheader { color: #ffdddd } .sidebar { width: 6in } .codebox { background: #f8e4e4; width: 100% } span.sans { font-family: sans-serif } Web Hosting Tips for Webmasters - Ruby Classes, Objects, and Variables From the examples we've shown so far, you might be wondering about our earlier assertion that Ruby is an object-oriented language. Well, this chapter is where we justify that claim.
cheap jsp web hosting services We're going to be looking at how you create classes and objects in Ruby, and at some of the ways in which Ruby is more powerful than most object-oriented languages. Along the way, we'll be implementing part of our next billion-dollar product, the Internet Enabled Jazz and Blue Grass jukebox. After months of work, our highly paid Research and Development folks have determined that our jukebox needs songs. So it seems like a good idea to start off by setting up a Ruby class that represents things that are songs. We know that a real song has a name, an artist, and a duration, so we'll want to make sure that the song objects in our program do, too.
cheap jsp web hosting services We'll start off by creating a basic class Song,[As we mentioned on page 9, class names start with an uppercase letter, while method names start with a lowercase letter.] which contains just a single method, initialize. class Song def initialize(name, artist, duration) @name = name @artist = artist @duration = duration end end initialize is a special method in Ruby programs. When you call Song.new to create a new Song object, Ruby creates an uninitialized object and then calls that object's initializemethod, passing in any parameters that were passed to new.
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