Investigating C++ Legacy Design Trends: Newer Isn’t Always Better!
Talkat CppCon 2024 · on Friday, 2024-09-20· at 14:45· Adams A, 6700 North Gaylord Rockies Boulevard·
summary
Compares concrete replacements and measurements: shows C++20 Concepts make errors readable versus SFINAE/Boost that produce inscrutable template traces; compares Singleton/monostate implementations to dependency injection with constructor/setter patterns and testability tradeoffs; demonstrates CRTP, its multi‑level pitfalls, and how C++23 deducing this simplifies CRTP; counts where templates recreate as many dynamic dispatch sites as virtuals and where compile‑time approaches win on performance and readability. Includes code samples and compiler output.
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chapters (7)
- 0:00Legacy design trends in C++
- 3:57Index loops vs range-based loops
- 8:10Global variables and Singleton
- 18:48Concepts and template constraints
- 30:46Polymorphism alternatives
- 45:48Modern C++ alternatives
- 48:59Conclusion
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