code: public static ListDouble pow(final ListNumber data, final double expon) {
          return new ListDouble() {
  
              @Override
              public double getDouble(int index) {
                  return Math.pow(data.getDouble(index), expon);
              }
  
              @Override
              public int size() {
                  return data.size();
              }
          };
      }
docs: Raises each value in a list to the same power.
  
  @param data The list of numbers to raise to a power
  @param expon The power to raise each number in the list to
  @return result[x] = data[x] ** expon