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I learned some time ago about Decision Trees and Decision tables. I feel that Decision Tables can help with conditional If-Then-Else statements. In particular, I feel that Decision Tables have no side-effects, for example, if you didn’t notice that you need one more ‘else if’ statement.
But I am not sure how I can implement it. Arrays? Database Tables? Does anyone even use Decision Tables in their code, nowadays?
I would highly recommend chapter 18 of Code Complete.
You could also check this post What Are Table Driven Methods