One Minute Evaluations for 15-17 April

CS 509 - Advanced Programming II

• Topic: Subtype polymorphism; pointer classes; virtual functions; dynamic binding; virtual and non-virtual; static look-up; dynamic look-up.

• Topic: Polymorphism.

  Didn't get: It is really hard to see where the virtual functions.

  One minute response: That's the general problem with object-oriented systems: understanding any part of them requires a complete scan up the parent-child chain.

• Topic: Virtual functions; class which behave like a pointer.

  Didn't get: Virtual functions; abstract virtual functions.

  One minute response: Virtual functions tell you to look in your house rather than your parents house; abstract virtual functions are a safer form of virtual functions.

• Topic: Inheritance. A has B as child and B has C as child, having A's member virtual, makes all child virtual. if A = B, then.

• Topic: Static and dynamic lookup; virtual functions; virtual destructors; classes and pointers.

  Didn't get: The example with the A & B class.

  One minute response: Yes; I'll fix that real soon.

• Topic: Static vs. dynamic lookups, virtual destructors, abstract virtual functions, classes and pointers.

  Didn't get: Abstract virtual functions are a little confusing.

  One minute response: They're actually simpler (and safer) than virtual member functions (except for the redeclaration part).

• Topic: Sub-type polymorphism was ok.

  Didn't get: Implementing virtual functions seems confusing.

  One minute response: It is. One way to handle it is to pretend you a Java or Smalltalk programmer and declare all member functions to be virtual. This will probably get you grief from the C++ programers, though.

• Topic: Inheritance, polymorphism, classes.

  Didn't get: HFX (I am not clear).

  One minute response: Neither am I; what is HFX?.

This page last modified on 25 March 2003.