https://github.com/bpolaszek/rewindable-generator

Uncaught Exception: Cannot traverse an already closed generator => NOT ANYMORE.
https://github.com/bpolaszek/rewindable-generator

Last synced: 3 months ago
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Uncaught Exception: Cannot traverse an already closed generator => NOT ANYMORE.

• Host: GitHub
• URL: https://github.com/bpolaszek/rewindable-generator
• Owner: bpolaszek
• License: mit
• Created: 2018-04-26T14:44:28.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2023-12-23T15:49:13.000Z (about 2 years ago)
• Last Synced: 2025-02-01T05:12:45.948Z (11 months ago)
• Language: PHP
• Size: 10.7 KB
• Stars: 4
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
[![Latest Stable Version](https://poser.pugx.org/bentools/rewindable-generator/v/stable)](https://packagist.org/packages/bentools/rewindable-generator)

[![License](https://poser.pugx.org/bentools/rewindable-generator/license)](https://packagist.org/packages/bentools/rewindable-generator)

[![CI Workflow](https://github.com/bpolaszek/rewindable-generator/actions/workflows/ci.yml/badge.svg)](https://github.com/bpolaszek/rewindable-generator/actions/workflows/ci.yml)

[![Coverage](https://codecov.io/gh/bpolaszek/rewindable-generator/branch/main/graph/badge.svg?token=L5ulTaymbt)](https://codecov.io/gh/bpolaszek/rewindable-generator)

[![Total Downloads](https://poser.pugx.org/bentools/rewindable-generator/downloads)](https://packagist.org/packages/bentools/rewindable-generator)

Rewindable generator

==============

```php

$generator = (function () {

    yield 'foo';

    yield 'bar';

})();

var_dump(iterator_to_array($generator)); // ['foo', 'bar']

var_dump(iterator_to_array($generator)); // Boom

```

> PHP Fatal error:  Uncaught Exception: Cannot traverse an already closed generator

Yes, I know. That's annoying. But here's a tiny class which will leverage a `CachingIterator` to make your generator rewindable.

Simple as:

```php

use BenTools\RewindableGenerator;

$generator = (function () {

    yield 'foo';

    yield 'bar';

})();

$iterator = new RewindableGenerator($generator);

var_dump(iterator_to_array($iterator)); // ['foo', 'bar']

var_dump(iterator_to_array($iterator)); // ['foo', 'bar']

```

**Warning:** An exception will be thrown if you intend to rewind a generator which has not reached the end (i.e you `break`the loop), since the `CachingIterator` won't have all items in cache.

Installation

------------

> composer require bentools/rewindable-generator

Tests

-----

> ./vendor/bin/phpunit