Gotta admit that array slicing syntax is still friendlier in Fortran

    a = [1,2,3,4,5,6]
    a(1:3) ! gives [1,2,3]

than with std::valarray

    a = {1,2,3,4,5,6};
    a[slice(0,3,0)]; // gives {1,2,3}

And I couldn't even find examples on how to do slicing with multi-dimensional arrays in std::valarray?

In Fortran it's just

    a(1:3,1:3)