code: public function apply(Scope $scope, GenericList $arguments) {
  		$nargs = count($arguments);
  		if ($nargs == 0) throw new \BadFunctionCallException("ArrayMap: No callback specified.");
  		elseif ($nargs == 1) throw new \BadFunctionCallException("ArrayMap: No target specified.");
  		$op = $arguments[0]->evaluate($scope);
  		
  		if (is_callable($op)) {
  			$args = [];
  			$it = $arguments->getIterator();
  			$it->rewind();
  			
  			for ($it->next(); $it->valid(); $it->next()) {
  				 $el = $it->current()->evaluate($scope);
  				 
  				 if ($el instanceof \IteratorAggregate) {
  				 	$eit = $el->getIterator();
  				 	$eit->rewind();
  				 	$el = [];
  				 	for (;$eit->valid(); $eit->next())
  				 		$el[] = $eit->current();
  				 }
  				 
  				 $args[] = $el;
  			}
  			
  			array_unshift($args, $op);
  			return call_user_func_array('array_map', $args);
  		}
  		
  		throw new \InvalidArgumentException("ArrayMap: Expected callable as first argument.");
  	}
docs: Applies a callback to a given array
  Usage: (Array::map "strtoupper" (array "a" "b" "c"))
  Returns: array
  (non-PHPdoc)
  @see \eMacros\Applicable::apply()