When programming in C++ arguments to function calls are always passed in a predefined order with a type checking. passing them in a wrong order or using a wrong type for them will typically result in a compilation error. This is a feature... most of the time. There are situations when possibility to change order or not to pass some arguments (not necessary the last one(s)) is a huge advantage. during the presentation a case study for such a situation will be presented, along with a template-based solution, using standard modern C++.