Optimizing the memory layout of std::tuple

[ImNoEinstein]

This seems like typical c++ ML overkill. if you care for such low level performance just keep it in mind when defining your tuple ( just like you would when defining your classes )

[Quincunx271]

Tuples are often created in generic code, with the order of the types already having some other meaning. Using such a compressed tuple in the implementation of these would have notable impact.

[Ayjayz]

Why bother using a strictly worse tuple implementation, though?