data = $data;
}
/**
* @return void
*/
public function clean()
{
$this->data = [];
}
/**
* This method can be used to pass a closure to created a filtered copy.
* The closure get an collection item passed and needs to return true when the item should
* be kept or false when it can be skipped.
*
* @param callable $filter
* @return AbstractCollection
*/
public function getFilteredCopy(\Closure $filter)
{
$copy = clone $this;
$filteredData = [];
foreach ($this->data as $key => $item) {
if ($filter($item)) {
$filteredData[$key] = $item;
}
}
$copy->data = $filteredData;
return $copy;
}
/**
* @return \ArrayIterator|\Traversable
*/
public function getIterator()
{
return new \ArrayIterator($this->data);
}
/**
* @return array
*/
public function getArrayCopy()
{
return $this->data;
}
/**
* @param int $position
* @return Object
*/
public function getByPosition($position)
{
$keys = array_keys($this->data);
return isset($this->data[$keys[$position]]) ? $this->data[$keys[$position]] : null;
}
/**
* (PHP 5 >= 5.1.0)
* Count elements of an object
* @link http://php.net/manual/en/countable.count.php
* @return int The custom count as an integer.
*
*
* The return value is cast to an integer.
*/
public function count()
{
return count($this->data);
}
/**
* @return int
*/
public function getCount()
{
return $this->count();
}
/**
* Whether a offset exists
*
* @param mixed $offset
* @return bool true on success or false on failure
*/
public function offsetExists($offset)
{
return array_key_exists($offset, $this->data);
}
/**
* Offset to retrieve
*
* @param mixed $offset
* @return mixed
*/
public function offsetGet($offset)
{
if ($this->offsetExists($offset)) {
return $this->data[$offset];
} else {
return null;
}
}
/**
* Offset to set
*
* @param mixed $offset
* @param mixed $value
* @return void
*/
public function offsetSet($offset, $value)
{
if ($offset === null) {
$this->data[] = $value;
return;
}
$this->data[$offset] = $value;
}
/**
* Offset to unset
*
* @param mixed $offset
* @return void
*/
public function offsetUnset($offset)
{
if ($this->offsetExists($offset)) {
unset($this->data[$offset]);
}
}
}