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Medium · template_metaprogramming · Quant Developer interview question · variadic-templates, sizeof, fold-expressions, c++11, c++17, logging
In high-frequency trading (HFT), structured logging must efficiently handle heterogeneous data types like price, side, and symbol without runtime overhead. C++ variadic templates provide a compile-time mechanism to create flexible functions, such as a logger that accepts any number of fields. This approach is crucial for performance-sensitive tasks like calculating ring-buffer checksums or validating audit trails. Task Implement the FieldLogger::log(Ts... values) variadic template method. This