FAQ 27.05 How can dynamic type checking be avoided?

Design. Design. Design.

Circumstances sometimes require the use of dynamic type checking, but unfortunately, dynamic type checking is often used when it is not required. Often dynamic type checking is used because the programmer does not have enough expertise or does not take the time to produce a good object-oriented design. When dynamic type checking seems attractive, try revising the design instead. After the design has been revisited and dynamic type checking still seems desirable, use it. But be aware of the additional coding, testing, and maintenance costs.