Quantity-safe analog literals

Analog literals Analog literals are a cute C++ gadget proposed by Eelis in the seminal article Multi-Dimensional Analog Literals. That forward-thinking monument to human mischief finally allowed C++ developers to represent lines, squares and cuboids directly in code: using namespace analog_literals::symbols; assert( ( o-------------o |L \ | L \ | L \ | o-------------o | ! ! ! ! ! o | ! L | ! L | !…