C++ Templates.

Generic C++: templates, deduction, constraints and the errors they produce. Covers 12 topics.

• C++ Templates · 1 of 3

  Concepts

  In C++20, what is a concept?

  Aa type alias that wraps one template argumentBa runtime check that runs before each template callCa named compile-time predicate on template argumentsDa base class that constrained types must inherit from

• C++ Templates · 2 of 3

  Specialization

  What does tag dispatch do in C++?

  Abranches at run time on a tag object valueBspecializes a class template per tag typeCcounts arguments to choose a bodyDselects an overload from a trait's type

• C++ Templates · 3 of 3

  Variadic templates

  In C++, a function template is declared as void bad(Ts... vs, Last l), and calls to it fail with no matching function. What is the standard fix?

  Atake the pack by forwarding reference Ts&&...Bput the fixed parameter before the packCgive the pack itself a default value listDgive the trailing Last a default argument