Returns a sub-deque of a given range

Beschreibung

public Ds\Deque::slice ( int $index [, int $length ] ) : Ds\Deque

Creates a sub-deque of a given range.

Parameter-Liste

index

The index at which the sub-deque starts.

If positive, the deque will start at that index in the deque. If negative, the deque will start that far from the end.

length

If a length is given and is positive, the resulting deque will have up to that many values in it. If the length results in an overflow, only values up to the end of the deque will be included. If a length is given and is negative, the deque will stop that many values from the end. If a length is not provided, the resulting deque will contain all values between the index and the end of the deque.

Rückgabewerte

A sub-deque of the given range.

Beispiele

Beispiel #1 Ds\Deque::slice() example


<?php
$deque = new \Ds\Deque(["a", "b", "c", "d", "e"]);

// Slice from 2 onwards
print_r($deque->slice(2));

// Slice from 1, for a length of 3
print_r($deque->slice(1, 3));

// Slice from 1 onwards
print_r($deque->slice(1));

// Slice from 2 from the end onwards
print_r($deque->slice(-2));

// Slice from 1 to 1 from the end
print_r($deque->slice(1, -1));
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Ds\Deque Object
(
    [0] => c
    [1] => d
    [2] => e
)
Ds\Deque Object
(
    [0] => b
    [1] => c
    [2] => d
)
Ds\Deque Object
(
    [0] => b
    [1] => c
    [2] => d
    [3] => e
)
Ds\Deque Object
(
    [0] => d
    [1] => e
)
Ds\Deque Object
(
    [0] => b
    [1] => c
    [2] => d
)