igorw/dev-zero

/dev/zero emulator, provides a large supply of zeroes.

v1.0.0 2014-12-20 12:06 UTC

README

/dev/zero emulator, provides a large supply of zeroes.

Installation

Through composer:

$ composer require igorw/dev-zero:~1.0

Usage

You can call the dev_zero function to get some zeroes.

use function igorw\dev_zero;

$zeroes = dev_zero();
foreach ($zeroes as $zero) {
    ...
}

For more advanced usage, it is possible to combine this library with nikic/iter.

For example, you can skip the first 256 zeroes:

use function igorw\dev_zero;
use function iter\drop;

$zeroes = drop(2<<7, dev_zero());

Or you can convert them to a series of ones:

use function igorw\dev_zero;
use function iter\map;

$ones = map($n ==> $n + 1, dev_zero());

Or even chunk the zeroes into blocks of 64K:

use function igorw\dev_zero;
use function iter\chunk;

$blocks = chunk(dev_zero(), 64*1024);

Or if you want to get actual null bytes, you can map over the series with chr:

use function igorw\dev_zero;
use function iter\map;

$nulls = map('chr', dev_zero());

Enjoy!