Things C++26 define_static_array can’t do

C++26 introduces std::define_static_array as a cleaner alternative to the 'constexpr two-step' for persisting compile-time computed arrays into static storage. However, it has significant limitations: it only works with structural types (excluding std::optional, std::string, std::string_view), cannot handle pointers to string literals as array elements, always produces const (non-mutable) data due to its reliance on template parameter objects, and requires copyable types. The post analyzes each limitation in detail with Godbolt examples, comparing define_static_array to the existing two-step workaround, and concludes that a future C++ facility — possibly tied to reflection's code-generation side — will likely be needed to address these gaps.