Multi-Paradigm Programming with Modern C++ - Class and Structs

The video tutorial discusses the differences and uses of classes and structs in C, emphasizing that while both support similar features, structs are public by default and classes are private. It explains when to use each, focusing on invariants and encapsulation. The logger class is used as an example to illustrate singleton patterns and error handling. The tutorial also covers class design principles, error checking, and the use of free functions to reduce coupling and separate concerns. Finally, it previews the next topic on constructors and destructors.

What is the primary difference between structs and classes in C++?

• Structs do not support inheritance.

• Classes cannot have member functions.

• Struct members are public by default, while class members are private by default.

• Structs are faster than classes.

When should you prefer using a class over a struct?

• When you need to perform arithmetic operations.

• When you want to ensure data members create an invariant.

• When you want to store only public data.

• When you need to use templates.

What is the purpose of the Singleton pattern in the logger class?

• To simplify the logger's interface.

• To allow multiple instances of the logger.

• To ensure only one instance of the logger exists.

• To make the logger class faster.

Why is it important to perform error checking in public functions?

• To make the code run faster.

• To make the code easier to read.

• To ensure the function performs as expected and does not corrupt data.

• To allow more users to access the function.

What is a potential consequence of not performing error checking in a function?

• The function will be easier to understand.

• The function might perform unexpected actions and corrupt data.

• The function will run faster.

• The function will be more secure.

Why might you choose to use a free function instead of a class member function?

• To increase the size of the class.

• To reduce coupling and maintain a clean separation of responsibilities.

• To make the function run faster.

• To allow the function to access private data.

What is a key guideline when adding helper functions to a class?

• Add as many helpers as possible to the class interface.

• Only add helpers that need access to the class internals.

• Helpers should be private by default.

• Helpers should always be virtual.