Returns a sub-vector of a given range

Descripción

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

Creates a sub-vector of a given range.

Parámetros

index

The index at which the sub-vector starts.

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

length

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

Valores devueltos

A sub-vector of the given range.

Ejemplos

Ejemplo #1 Ds\Vector::slice() example


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

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

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

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

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

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

El resultado del ejemplo sería algo similar a:

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