PHP code example of bentools / iterable-functions

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

bentools / iterable-functions example snippets

use function BenTools\IterableFunctions\iterable_to_array;

var_dump(iterable_to_array(new \ArrayIterator(['foo', 'bar']))); // ['foo', 'bar']
var_dump(iterable_to_array(['foo', 'bar'])); // ['foo', 'bar']

use function BenTools\IterableFunctions\iterable_to_traversable;

var_dump(iterable_to_traversable(['foo', 'bar'])); // \ArrayIterator(['foo', 'bar'])
var_dump(iterable_to_traversable(new \ArrayIterator(['foo', 'bar']))); // \ArrayIterator(['foo', 'bar'])

use function BenTools\IterableFunctions\iterable_map;

$generator = function () {
    yield 'foo';
    yield 'bar';
};

foreach (iterable_map($generator(), 'strtoupper') as $item) {
    var_dump($item); // FOO, BAR
}

use function BenTools\IterableFunctions\iterable_merge;

$generator1 = function () {
    yield 'foo';
};

$generator2 = function () {
    yield 'bar';
};

foreach (iterable_merge($generator1(), $generator2()) as $item) {
    var_dump($item); // foo, bar
}

use function BenTools\IterableFunctions\iterable_reduce;

$generator = function () {
    yield 1;
    yield 2;
};

$reduce = static function ($carry, $item) {
    return $carry + $item;
};

var_dump(
    iterable_reduce($generator(), $reduce, 0))
); // 3

use function BenTools\IterableFunctions\iterable_filter;

$generator = function () {
    yield 0;
    yield 1;
};

foreach (iterable_filter($generator()) as $item) {
    var_dump($item); // 1
}

use function BenTools\IterableFunctions\iterable_filter;

$generator = function () {
    yield 'foo';
    yield 'bar';
};

$filter = function ($value) {
    return 'foo' !== $value;
};


foreach (iterable_filter($generator(), $filter) as $item) {
    var_dump($item); // bar
}

use function BenTools\IterableFunctions\iterable_values;

$generator = function () {
    yield 'a' => 'a';
    yield 'b' => 'b';
};

foreach (iterable_values($generator()) as $key => $value) {
    var_dump($key); // 0, 1
    var_dump($value); // a, b
}

use function BenTools\IterableFunctions\iterable_chunk;

$fruits = [
    'banana',
    'apple',
    'strawberry',
    'raspberry',
    'pineapple',
]
$fruits = (fn () => yield from $fruits)()
iterable_chunk($fruits, 2);

/*
  [
    ['banana', 'apple'],
    ['strawberry', 'raspberry'],
    ['pineapple'],
  ]
 */

use function BenTools\IterableFunctions\iterable;
$data = [
    'banana',
    'pineapple',
    'rock',
];

$iterable = iterable($data)->filter(fn($eatable) => 'rock' !== $eatable)->map('strtoupper'); // Traversable of ['banana', 'pineapple']

use function BenTools\IterableFunctions\iterable;
$data = [
    'banana',
    'pineapple',
    'rock',
];

$data = fn() => yield from $data;

$iterable = iterable($data())->filter(fn($eatable) => 'rock' !== $eatable)->map('strtoupper'); // Traversable of ['banana', 'pineapple']

$iterable->asArray(); // array ['banana', 'pineapple']

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