In this book we are going to explore C++ template skill. This book helps you to become good C++ professional. It will help you to design library and tools by using C++ programming language.
You will master variadic templates, enabling you to handle a variable number of template arguments and implement flexible functions and classes. You will explore template recursion and iteration techniques, allowing you to perform recursive template instantiation and simulate loops for creating compile-time sequences and algorithms. You will learn to leverage SFINAE (Substitution Failure Is Not An Error) to perform function overloading and specialization, and implement enable_if and conditional logic to constrain templates effectively. You'll gain expertise in utilizing type traits and compile-time type information by using and extending standard type traits, creating custom type traits, and performing conditional compilation based on type properties. You will design expression templates to create domain-specific languages (DSLs) within C++, optimize performance through delayed evaluation, and implement efficient arithmetic and computational libraries. You will apply concepts and constraints introduced in C++20 to define and use concepts that constrain template parameters, write generic and readable code, and combine concepts with other template techniques. You will master constant expressions (constexpr) to enforce compile-time evaluation of functions and variables, integrating constexpr with template metaprogramming to enhance compile-time capabilities. You will implement tag dispatching and type tagging for function overloading and specialization, passing and manipulating type information using type tags. You will practice variadic template pattern matching, employing techniques for pattern matching with variadic templates, and decomposing and processing parameter packs effectively. You will explore static reflection, particularly in C++20 and beyond, discovering its possibilities for advanced metaprogramming and reflecting on types, members, and attributes at compile time to create more dynamic code.
You will utilize policy-based design to implement policies for creating flexible and reusable template classes, combining policies with metaprogramming to apply common design patterns. Finally, you will advance your use of enable_if and if constexpr, controlling template instantiation and using if constexpr for conditional compilation and logic branching within templates. The best part of this book is the last chapter “interview Question” , this will help you to remind, exercise and sharpen your C++ template skill. It will also help you to crack some toughest interview questions during the journey of your job hunting.