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Hard · template_metaprogramming · Quant Developer interview question · crtp, mixin, static-polymorphism, zero-cost-abstraction, template-metaprogramming, inheritance
The Curiously Recurring Template Pattern (CRTP) enables static polymorphism in C++, eliminating the runtime overhead of virtual functions. In low-latency trading, this is essential for adding behaviors like logging to core objects without performance penalties. CRTP achieves this by allowing a base class to call methods of a derived class at compile time, providing a zero-cost abstraction. Task Implement the LoggingMixin<Derived> class template to provide logging functionality to a derived clas