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copied!<p>I don't know if I can answer your question, but I can tell you something about the "Design Patterns" book. </p> <p>It was an instant classic when it was published in 1994/1995. With examples in C++ and Smalltalk (there was no Java or C# back then), it listed solutions to 26 common problems in object-oriented programming. It provided a format for documenting forces and resolutions that was eagerly snapped up by academic conferences for years after. Lots of programmers, including myself, were studying it like holy writ in the hope that a single book could make them superstars.</p> <p>Then reality set in.</p> <p>Functional programmers said the patterns were work-arounds for flaws in OOP. What's the fuss? They could do these things without resorting to patterns.</p> <p>The usual response on first reading the book is to try and fit as many patterns as you can into whatever code you happen to be writing at that moment.</p> <p>You'll find yourself using the pattern names in design sessions: "I think we need a Chain of Responsibility here!"</p> <p>Eventually you calm down and realize that patterns aren't the answers to your problems. The best way to use them is to think hard about your problems and solutions and suddenly realize that your answer happens to fall into a pattern.</p> <p>As for your problem, I don't think you need a pattern. Have the Table send a message to the Floor to ask about its type before you generate the sound. That'll do it. Simplicity is a virtue.</p>

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