3: Patterns
Abstract
Design patterns offer general solutions to common software design problems. This chapter provides details for various design patterns and C++ idioms that are particularly relevant to application programming interface (API) design. This includes the pimpl idiom, which provides a way to hide all internal details from your public header files. The Singleton pattern provides access to global state. Its implementation in C++ can be tricky, so singleton best practices and thread safety are covered. The Factory Method patterns make up for several limitations of C++ constructors and can be used to hide implementation details for derived classes. Various patterns for wrapping a new API on top of an incompatible or legacy interface ...
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