What is the best way to replace or substitute if..else if..else trees in programs?

Question

This question is motivated by something I\'ve lately started to see a bit too often, the if..else if..else structure. While it\'s simple and has its uses, somet

Answer 1

Depending on the type of thing you are if..else'ing, consider creating a hierarchy of objects and using polymorphism. Like so:

class iBase
{
   virtual void Foo() = 0;
};

class SpecialCase1 : public iBase
{
   void Foo () {do your magic here}
};

class SpecialCase2 : public iBase
{
   void Foo () {do other magic here}
};

Then in your code just call p->Foo() and the right thing will happen.