code: public function apply(Scope $scope, GenericList $arguments) {
  		$nargs = count($arguments);		
  		if ($nargs == 0) throw new \BadFunctionCallException("StringScan: No parameters found.");
  		elseif ($nargs == 1) throw new \BadFunctionCallException("StringScan: No format specified.");
  		$str = $arguments[0]->evaluate($scope);
  		$format = $arguments[1]->evaluate($scope);
  		if ($nargs > 2) {
  			$arr = sscanf($str, $format);
  			
  			for ($i = 0, $n = count($arr); $i < $n && $i < $nargs - 2; $i++) {
  				$target = $arguments[$i + 2];
  				if (!($target instanceof Symbol))
  					throw new \InvalidArgumentException(sprintf("StringScan: Unexpected %s found as additional parameter.", substr(strtolower(strstr(get_class($arguments[0]), '\\')), 1)));
  				$scope->symbols[$target->symbol] = $arr[$i];
  			}
  			
  			return count($arr);
  		}
  		else return sscanf($str, $format);
  	}
docs: Interprets a string with a given format
  Usage: (sscanf "SN/2350001", "SN/%d") (sscanf "24\tLewis Carroll" "%d\t%s %s" _id _first _last)
  Returns: array | int
  (non-PHPdoc)
  @see \eMacros\Applicable::apply()