rangeUnchecked method
Returns a mutable view onto the row and column ranges. The behavior is undefined if any of the ranges are out of bounds.
Implementation
Matrix<T> rangeUnchecked(
int rowStart, int rowEnd, int columnStart, int columnEnd) =>
rowStart == 0 &&
rowEnd == rowCount &&
columnStart == 0 &&
columnEnd == colCount
? this
: _rangeUnchecked(this, rowStart, rowEnd, columnStart, columnEnd);