The C++ Pills are some little pieces of advice that take advantage of the object-oriented support and the syntactic sugar in C++, or that (partially) correct deficiencies in the C++ language.

C++ Pills:

• "Template-based policy-driven by-value versus by-reference-to-const argument passing" describes a policy that can be implemented by basic template techniques, to decide in one place whether values of each type will be passed by value or by reference to const for efficiency, with sensible sizeof()-based defaults.
• "Hierarchy introspection" describes how to have classes descended from a common ancestor automatically declared to a repository during program initialisation, so that a basic form of introspection (namely, having access to the constructors of all the classes descended from a selected base class) can be achieved, and new derived classes can be added to the code without modifying existing code (either base or derived class code or user code).
• "Templated Pimpl implementation" gives a small class that implements the "Pimpl" idiom using templates.