PYTHON array_pad

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Python replacement for PHP's array_pad [ edit | history ] 
def array_pad(lst, size, value):
    if size >= 0:
        return lst + [value] * (size - len(lst))
    else:
        return [value] * (-size - len(lst)) + lst

PHP array_pad

PHP original manual for array_pad [ show | php.net ]

array_pad

(PHP 4, PHP 5)

array_pad — Pad array to the specified length with a value

Description

array array_pad ( array $input , int $pad_size , mixed $pad_value )

array_pad() returns a copy of the input padded to size specified by pad_size with value pad_value . If pad_size is positive then the array is padded on the right, if it's negative then on the left. If the absolute value of pad_size is less than or equal to the length of the input then no padding takes place. It is possible to add most 1048576 elements at a time.

Parameters

input

Initial array of values to pad.

pad_size

New size of the array.

pad_value

Value to pad if input is less than pad_size .

Return Values

Returns a copy of the input padded to size specified by pad_size with value pad_value . If pad_size is positive then the array is padded on the right, if it's negative then on the left. If the absolute value of pad_size is less than or equal to the length of the input then no padding takes place.

Examples

Example #1 array_pad() example

<?php
$input = array(12, 10, 9);

$result = array_pad($input, 5, 0);
// result is array(12, 10, 9, 0, 0)

$result = array_pad($input, -7, -1);
// result is array(-1, -1, -1, -1, 12, 10, 9)

$result = array_pad($input, 2, "noop");
// not padded
?>

See Also

  • array_fill() - Fill an array with values
  • range() - Create an array containing a range of elements

Array Functions
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