Coding style

[sjunges]

I dont like for (auto ... ) and prefer for (auto const& ).

If auto refers to an integer or other POD, I would expect that one makes a conscious decision not to write auto const& and one can then just write the actual type.

I dont know whether this is easily clang format enforcable though.

[volkm]

I am also not sure whether clang-format can deal with it. At least with all warnings, auto const& will give a warning because one uses a reference of a temporary object.

[volkm]

clang-tidy could be an option to enforce such coding styles which go beyond simple formatting with clang-format.