Repeated Switches
If you see the same switch
statement in several places, it’s a sign that you could be using a more flexible and dynamic structure like polymorphism. One switch statement by itself perhaps isn’t too dangerous, but if you have several then it’s annoying duplication. If you add a new clause to one switch statement, you probably have to remember to update all of them.
Sources
- This smell is included Martin Fowler's book "Refactoring", 2nd Edition
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