Function Quantity.value

Gets the value of this quantity when expressed in the given target unit.

N value(Q) (
  auto const ref Q target
) const
if (isQuantity!Q);

N value(Q) (
  auto const ref Q target
) const
if (isQVariant!Q);

If Q is a QVariant, throws a DimensionException if the parsed quantity doesn't have the same dimensions as Q. If Q is a Quantity, inconsistent dimensions produce a compilation error.