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By mswatcher
via blog.functorial.com
Published: Oct 03 2013 / 11:44

For many developers using Object Oriented programming languages, the Visitor Pattern is one of the first design patterns to provide a major roadblock in terms of understanding. It doesn't help that the typical examples are not particularly enlightening, but in my experience, it can be very difficult to explain to a beginner what is going on and why the design pattern is useful, especially with all of the syntactic noise that comes with a language like Java or C#.
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