Design patterns have proven to be useful over several decades and knowledge about them is still very useful to design robust, decoupled systems. Modern C++, however, has profoundly changed the way we use C++, think about design and implement solutions. This hands-on training explores modern C++ design and the modern forms of the classic design patterns. It provides guidelines, idioms and best practices for sustainable and maintainable design, which enable programmers to create professional, high-quality code. Amongst others it will answer the following questions:

• How does good C++ design with a minimum of dependencies look like?
• Why does classical C++ design based on inheritance hierarchies fail so often?
• What advantages does value semantics based design provide?
• How are the classic design patterns realised in modern C++?
• What are alternatives to the classic design patterns?

After this course, participants will …

… have an impression on the modern alternatives of classic design patterns; … have gained knowledge about modern design techniques; … understand how std::function, std::any, and ranges work; … avoid the usual pitfalls in the context of inheritance; … know about the importance of value semantics.

(De-)Motivation: The Perils of Inheritance Hierarchies

Classic Design Patterns Revisited - Command - Prototype - Strategy - Observer - Visitor - Factory - Decorator - Template Method - Singleton

Modern Design Patterns - Type Erasure - CRTP - Expression Templates - Policy Based Design