loophp\collection\Operation\RSample

Complexity

Total Complexity

2

Size/Duplication

Total Lines	29
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	on()	0	9	1
A	__construct()	0	3	1

<?php

declare(strict_types=1);

namespace loophp\collection\Operation;

use Closure;
use loophp\collection\Contract\Operation;

/**
 * Class RSample.
 */
final class RSample implements Operation
{
    /**
     * @var float
     */
    private $probability;

    /**
     * RSample constructor.
     *
     * @param float $probability
     */
    public function __construct(float $probability)
    {
        $this->probability = $probability;
    }

    /**
     * {@inheritdoc}
     */
    public function on(iterable $collection): Closure
    {
        $probability = $this->probability;

        $callback = static function ($item) use ($probability): bool {

The parameter $item is not used and could be removed.

            return (mt_rand() / mt_getrandmax()) < $probability;
        };

        return (new Filter($callback))->on($collection);
    }
}