ИСХОДНИКИ [вопросы здесь не задаем, благодарность не выражаем]

[f3ath]

Итератор как в php5

Интерфейс:

interface Iterator // this is interface actually, identical to PHP5 iterator
{
	// Returns the current value
	public function current();
 
	// Returns the current key
	public function key();
 
	// Moves the internal pointer to the next element
	public function next():Void
 
	// Moves the internal pointer to the first element
	public function rewind():Void;
 
	// If the current element is valid (boolean)
	public function valid():Boolean;
}

Итератор для массива

class ArrayIterator implements Iterator
{
	private var p:Number;
	private var a:Array;
	
	public function ArrayIterator(arr)
	{
		this.a = arr;
		this.p = 0;
	}
	
	// Returns the current value
	public function current()
	{
		return a[p];
	}
	
 
	// Returns the current key
	public function key()
	{
		return p;
	}
 
	// Moves the internal pointer to the next element
	public function next():Void
	{
		this.p++;
	}

	// Moves the internal pointer to the previuos element
	public function prev():Void
	{
		this.p--;
	}
	
 
	// Moves the internal pointer to the first element
	public function rewind():Void
	{
		this.p = 0;
	}

	// Moves the internal pointer to the last element
	public function ff():Void
	{
		this.p = (this.a.length - 1) ;
	}
 
	// If the current element is valid (boolean)
	public function valid():Boolean
	{
		return Boolean(this.p < this.a.length);
	}
}