Multi-Paradigm Programming with Modern C++ - Modules in C++ 2a

The video tutorial discusses the limitations of using includes in C++ and introduces modules as a modern solution. It explains the basics of creating and using modules, including the use of new keywords like 'export' and 'import'. The tutorial also covers the concepts of visibility and reachability within modules, demonstrating how classes can be exported and used. The video concludes with a brief overview of what will be covered in the next tutorial, focusing on structuring modules with implementation and partition units.

What is one of the main issues with using includes in C++?

• They require a lot of memory.

• They are not supported by any compiler.

• They can create dependency issues based on the order of includes.

• They are too fast to compile.

What is a key reason why modules are not yet production-ready?

• They require a new programming language.

• They are too complex to understand.

• Full support from compilers and build systems is still lacking.

• They are not compatible with any existing code.

What keyword is used to make a class available to users of a module?

• export

• namespace

• include

• import

What is the purpose of the 'import' keyword in C++ modules?

• To declare a new module.

• To include a header file.

• To use a module in a program.

• To export a class from a module.

What happens if you try to use a non-exported class from a module?

• The compiler will produce an error.

• The program will crash.

• The class will be automatically exported.

• The class will be ignored.

What is the difference between visibility and reachability in C++ modules?

• Visibility allows name lookup, while reachability allows semantic access.

• Visibility is for exported classes, reachability is for non-exported classes.

• Visibility is for public classes, reachability is for private classes.

• Visibility is for classes, reachability is for functions.

What can you do with a class that is reachable but not visible?

• You can modify its code.

• You can call its functions and access its members.

• You can export it.

• You can delete it.