I've never seen nor heard of pointer_to ever being used to declare a pointer to something. I believe t's used inside of custom allocators for a generic type tha

I've never seen nor heard of pointer_to ever being used to declare a pointer to something. I believe t's used inside of custom allocators for a generic type that might not use a normal pointer as the pointer type, but would never be used for normal declarations like this. std::array is useful for letting the compiler avoid array-to-pointer decaying, value semantics, and also actually putting array length type info in a function parameter.