A revelation

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SculptureOfSoul

lol - Surely that is more understandable - or at least less intimidating - to a non-coder than the following chunk of C++ template code

template <class T, class D1, class D2>
quantity< 
    T
  , typename mpl::transform<D1,D2,plus_f>::type  // new dimensions
>
operator*(quantity<T,D1> x, quantity<T,D2> y)
{
    typedef typename mpl::transform<D1,D2,plus_f>::type dim;
    return quantity<T,dim>( x.value() * y.value() );
}

It all comes down to your frame of reference.