C++ Reflection - Back on Track
summary
Proposal P2996 gives compile‑time reflection with a single opaque meta type (std::meta_info), a prefix ^ operator for reflection, consteval meta functions to query members and types, and a code‑injection mechanism using splice [::] plus helper functions substitute and define_class. Examples compile on experimental EDG, Clang fork and NVIDIA NVHPC compilers and show real features: auto fill of a command‑line options struct, enum→string, automatic serialization and struct‑of‑arrays generation; implementations exist but remain preliminary.
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chapters (7)
- 0:00Introduction to reflection
- 23:23Proposal P2996 fundamentals
- 35:42Splicers and operators
- 40:43Metafunctions and querying
- 50:44Practical coding examples
- 56:03Advanced injection techniques
- 1:10:23Serialization and future outlook
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