Simplifying the PImpl Idiom with C++26's std::indirect Type
The PImpl idiom and the C++26 std:indirect type
I explore how the PImpl idiom separates interfaces from implementations to minimize compile-time dependencies. While raw pointers and std::unique_ptr have worked well, they struggle with const propagation and null checks. The new C++26 std::indirect type solves these issues by behaving like a value while managing heap allocation, offering deep copying and robust state management without manual resource handling.
The std::indirect type owns a single object allocated on the heap, but behaves like a value member, ensuring deep copies and proper const propagation without the risk of null pointers.