The curiously recurring template pattern (CRTP) is a C++ idiom in which a class X derives from a class template instantiation using X itself as template argument. The name of this idiom was coined by Jim Coplien, who had observed it in some of the earliest C++ template code as well as in code examples that Timothy Budd created in his multiparadigm language, Leda Multiparadigm programming in Leda..
Read more about Curiously Recurring Template Pattern: General Form, Static Polymorphism, Object Counter, Polymorphic Copy Construction, Pitfalls
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