s a set of closed or open Range, like so:
 [0,10,50,60] - Ranges are {0-9}, {50-59}
 [20] - Ranges are {20-}
 [30,40,100] - Ranges are {30-39}, {100-}

 All Ranges in the array have a closed lower bound. Only the last Range in each array may be open.
 It is assumed that the passed in arrays are sorted with ascending order.
 It is assumed that no two elements in a given are equal (i.e. no 0-length ranges)

 The method returns an intersect of the two passed in Range-sets</div>
<dl><dt><span class="strong">Par