1 post tagged #modules.
#modules
Vittorio Romeo measured what C++26 reflection actually costs: the <meta> header adds ~181ms per TU on GCC 16.1, but the reflection algorithm itself is ~0.07ms per enumerator. The header is 2500x more expensive than the logic. A three-line CMake PCH stanza cuts the header cost by 2.3x. Modules, surprisingly, make it worse.
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