Design patterns have proven themselves invaluable over several decades and thus knowledge about them is essential to design robust, decoupled systems. Modern C++, however, has profoundly changed the way we use C++, how we think about design and implement solutions. This also affects how we implement design patterns.

This training class explores modern C++ design and the modern forms of classic design patterns. It provides guidelines, idioms and best practices for sustainable and maintainable design, which enables 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?
• What are the most important rules for robust, maintainable, and sustainable design?
• What are the most common pitfalls in C++ software design?
• Why does classical C++ design based on inheritance hierarchies fail so often?
• How are the classic design patterns implemented in modern C++?
• What are alternatives to the classic design patterns?

After this course, participants will …
… have a detailed understanding of the essential design principles;
… understand the benefits of separation of concerns;
… be able to design code with minimum dependencies;
… have an impression of the modern alternatives of classic design patterns;
… have gained knowledge about modern design techniques;
… understand how std::function, std::any, and ranges work;
… favor composition over inheritance;
… avoid the usual pitfalls in the context of inheritance;
… know about the importance of value semantics;
… comprehend the advantages of non-intrusive design.

• You are not aware of the impact of dependencies on code quality
• You don’t know the SOLID principles or don’t consider them for your work
• You believe object-oriented programming is about inheritance relationships
• You consider moving functionality into classes the preferred design choice
• You want to reevaluate classic design patterns
• You want to get an impression of modern C++ design patterns
• You wonder about type erasure and expression templates or their value