Ds\Deque::unshift

(PECL ds >= 1.0.0)

Ds\Deque::unshiftAdds values to the front of the deque

Opis

public Ds\Deque::unshift ([ mixed $values ] ) : void

Adds values to the front of the deque, moving all the current values forward to make room for the new values.

Parametry

values

The values to add to the front of the deque.

Informacja:

Multiple values will be added in the same order that they are passed.

Zwracane wartości

Nie jest zwracana żadna wartość.

Przykłady

Przykład #1 Ds\Deque::unshift() example

<?php
$deque 
= new \Ds\Deque([123]);

$deque->unshift("a");
$deque->unshift("b""c");

print_r($deque);
?>

Powyższy przykład wyświetli coś podobnego do:

Ds\Deque Object
(
    [0] => b
    [1] => c
    [2] => a
    [3] => 1
    [4] => 2
    [5] => 3
)
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User Contributed Notes 1 note

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hugo at fc dot up dot pt
2 years ago
Where the documentation says "moving all the current values forward", while it sounds like the complexity would be O(N), I checked the code at https://github.com/php-ds/ext-ds/blob/master/src/ds/ds_deque.c#L366 and it is in fact O(1) for each element
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