A Static Alternative to Virtual Functions, Using Expression SFINAE
summary
A header-only, fully static replacement for virtual dispatch that uses Expression SFINAE and the void_t detection idiom to test whether the implementation type provides richer methods and to select either a direct call or a fallback implementation at compile time. The interface is a class template with a minimal basis API and optional extensions; implementations that supply optimized methods get inlined calls, the template instantiates only used paths, and there is no vtable overhead.
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chapters (9)
- 0:00Intro
- 0:15The familiar interface
- 0:30The idea
- 1:05The implementation
- 1:22Autocompletion engine
- 1:54Implementation options
- 2:34Expression pattern
- 2:55Upshot
- 3:42Conclusion
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