+ package:dimensional

Adds two Quantitys.

Adds two possibly scaled SQuantitys, preserving any scale factor. Use in conjunction with changeRepRound to combine quantities with differing scale factors.

Append two lists, i.e.,

[x1, ..., xm] ++ [y1, ..., yn] == [x1, ..., xm, y1, ..., yn]
[x1, ..., xm] ++ [y1, ...] == [x1, ..., xm, y1, ...]

If the first list is not finite, the result is the first list. WARNING: This function takes linear time in the number of elements of the first list.