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affordable website hosting codebox { background: #f8e4e4; width: 100% } span.sans { font-family: sans-serif } Ruby Basic Input and Output Ruby provides what at first sight looks like two separate sets of I/O routines. The first is the simple interface---we've been using it pretty much exclusively so far. print "Enter your name: " name = gets There are a whole set of I/O-related methods implemented in the , , ---that make it simple and convenient to write straightforward Ruby programs. These methods typically do I/O to standard input and standard output, which makes them useful for writing filters.
affordable website hosting You'll find them documented starting on page 411. The second way, which gives you a lot more control, is to use objects. Ruby defines a single base class, , to handle input and output. This base class is subclassed by classes and to provide more specialized behavior, but the principles are the same throughout. An object is a bidirectional channel between a Ruby program and some external resource.
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