Esempio n. 1
0
 public function intersect(Range $range)
 {
     $lowestNumber = max($range->getLowestNumber(), $this->lowestNumber);
     $highestNumber = min($range->getHighestNumber(), $this->highestNumber);
     if ($lowestNumber <= $highestNumber) {
         return $this->createRange($lowestNumber, $highestNumber);
     }
     return null;
 }