PHP code example of camille-hdl / lazy-lists

1. Go to this page and download the library: Download camille-hdl/lazy-lists library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

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

camille-hdl / lazy-lists example snippets


$getUsefulInsight = pipe(
    map($getProductsInOrder),
    flatten(1),
    filter($isTechnologyRelated),
    take(50),
    reduce($computeInsight, $initialValue)
);
$insight = $getUsefulInsight($orders);


use function LazyLists\map;
use function LazyLists\filter;
use function LazyLists\reduce;
use function LazyLists\flatten;
use function LazyLists\take;

$result = map($fn, $input);
$result = filter($fn, $input);
$result = reduce($fn, [], $input);
$result = flatten(1, $input);
$result = take(10, $input);


use function LazyLists\pipe;
use function LazyLists\iterate;
use function LazyLists\map;
use function LazyLists\filter;
use function LazyLists\reduce;
use function LazyLists\each;
use function LazyLists\flatten;
use function LazyLists\take;
use function LazyLists\until;

/**
 * Compose steps together into a single function
 */
$computeFinalResult = pipe(
    flatten(1),
    filter($myPredicate),
    map($myTransformation),
    each($mySideEffect),
    take(10),
    reduce($myAggregator, 0)
);
// returns an array
$result = $computeFinalResult($myArrayOrIterator);

// returns an iterator
$filterIterator = iterate(
    filter($myPredicate),
    until($myCondition)
);
foreach ($filterIterator($myArrayOrIterator) as $key => $value) {
    echo "$key : $value";
}

// you can iterate over a reduction
$reduceIterator = iterate(
    reduce(function ($acc, $v) { return $acc + $v; }, 0),
    until(function ($sum) { return $sum > 10; })
);
foreach ($reduceIterator([1, 5, 10]) as $reduction) {
    echo $reduction;
}
// 1, 5