Tencent Cloud Developer

Jul 18, 2022 · Fundamentals

Compile-Time Polymorphism in C++: Implementation with folly::poly and dyno

The article explains how compile‑time polymorphism in modern C++—using libraries like folly::poly and dyno—can replace traditional virtual‑table based runtime polymorphism by employing small‑object optimization, compile‑time generated VTables, and type‑erased wrappers, delivering near‑virtual performance without inheritance or heap allocation.