public function testSlice()
{
$array = CArray::fromElements("a", "b", "c", "d", "e");
$subarray = CArray::slice($array, 1, 4);
$this->assertTrue(CArray::equals($subarray, CArray::fromElements("b", "c", "d")));
$subarray = CArray::slice($array, 3, 5);
$this->assertTrue(CArray::equals($subarray, CArray::fromElements("d", "e")));
// Special cases.
$subarray = CArray::slice($array, 5, 5);
$this->assertTrue($subarray->getSize() == 0);
$subarray = CArray::slice($array, 0, 0);
$this->assertTrue($subarray->getSize() == 0);
$subarray = CArray::slice($array, 2, 2);
$this->assertTrue($subarray->getSize() == 0);
}
/**
* An alias for the previous method.
*
* Returns a sequence of elements from an array, as another array, with both starting and ending positions
* specified.
*
* This method works much like `substring` method of the CUStringObject class.
*
* The method allows for an empty array to be returned.
*
* @param int $startPos The position of the first element in the sequence to be copied.
* @param int $endPos The position of the element that *follows* the last element in the sequence to be copied.
*
* @return CArrayObject The array containing the copied elements.
*/
public function slice($startPos, $endPos)
{
return self::fromSplArray(CArray::slice($this->m_splArray, $startPos, $endPos));
}
