colRange method
Returns a mutable view onto the row range. Throws a RangeError, if
columnStart
or columnEnd
are out of bounds.
Implementation
Matrix<T> colRange(int columnStart, [int? columnEnd]) {
columnEnd = RangeError.checkValidRange(
columnStart, columnEnd, colCount, 'columnStart', 'columnEnd');
return colRangeUnchecked(columnStart, columnEnd);
}