C++ Generic Programming & Templates isn't just a reference, it's your definitive playbook for unlocking the full power of compile-time polymorphism. From architecting constraint-driven APIs with Concepts to fusing loops with Expression Templates, this book guides you through every facet of modern C++ metaprogramming. You'll learn how to build reusable, zero-overhead libraries that scale from embedded systems to high-performance servers, all while keeping build times and binary sizes in check.
What You'll Learn
✔ Constraint-Driven API Design
- Leverage C++20 Concepts, requires-clauses, and abbreviated function templates to specify intent and eliminate misuse at compile time
- Compose fine-grained concept hierarchies that mirror the STL and ensure overload resolution chooses exactly the right algorithm
- Craft custom diagnostics with static_assert and if constexpr to provide immediate, actionable error messages
✔ Variadic Metaprogramming & Pack Utilities
- Master parameter-pack expansions, sizeof..., and fold expressions to implement sum, logical conjunction/disjunction, and tuple concatenation in a single line
- Use std:: index_sequence, integer_sequence, and compile-time loops to iterate over heterogeneous std:: tuple and std:: array without recursion
- Apply the Detection Idiom, SFINAE (std:: enable_if_t), and variable templates to probe and adapt to type capabilities
✔ Expression Templates for Numeric Kernels
- Build lazy evaluation frameworks that fuse chained operations (a + b + c) into a single loop, eliminating temporaries and maximizing cache locality
- Extend vectors to matrices and tensor libraries, implementing block-level optimizations and SIMD packet traits
- Study real-world patterns from Eigen's math kernels and learn best practices for debugging and controlling code size
✔ Policy-Based Design, Mix-Ins & CRTP
- Structure generic classes via variadic policy packs to inject memory allocators, logging, threading, and validation behaviors at compile time
- Employ CRTP for static polymorphism, compile-time registration, and mix-in composition without virtual tables
- Combine tag dispatch, full and partial specialization, and enable_if to steer implementation branches precisely
✔ Modern Metaprogramming Libraries
- Harness Boost.MP11 for lightweight, header-only type-list algorithms (mp_transform, mp_filter, mp_sort)
- Adopt Boost.Hana's heterogeneous containers, compile-time strings, and functional algorithms for value-level computations and pattern matching
- Integrate Range-v3 (and C++20 Ranges) to build lazy, composable pipelines with filter, transform, zip, and chunk views
✔ Building Production-Ready Libraries
- Balance header-only and precompiled components with explicit instantiation and PIMPL to curb compile times and binary bloat
- Modularize with CMake: define interface vs. implementation targets, generate YourLibConfig.cmake, and support componentized find_package
- Package and publish via Conan and vcpkg, manage semantic versioning, ABI stability, and cross-platform integration
✔ Testing, Benchmarking & Profiling
- Drive comprehensive unit tests on templates with Catch2's TEMPLATE_TEST_CASE and Google Test's
Who This Book Is For
- C++ library authors building reusable, high-performance frameworks
- Systems and embedded engineers demanding zero-overhead abstractions
- Developers integrating generic components in large-scale, multi-module projects
- DevOps and platform architects packaging and distributing template-heavy code across teams
Packed with complete code samples, real-world case studies, and actionable best practices, C++ Generic Programming & Templates arms you with the strategies you need to master modern C++ metaprogramming where every template instantiation.
