Question 1

How to make an iterator rewindable with Iter?

Accepted Answer

Use iter\makeRewindable to wrap functions like map, or prefix with iter\rewindable\ (e.g., rewindable\map). This allows multiple passes over generator-based iterators, but adds overhead compared to native arrays.

Question 2

Iter vs Laravel Collections: which is better?

Accepted Answer

Iter is lightweight and works with any iterable using lazy evaluation, ideal for pure PHP projects. Laravel Collections offer more features like eager methods and integration with Laravel, but are tied to that framework and less memory-efficient for large data.

Question 3

When should I use Iter over array_map in PHP?

Accepted Answer

Use Iter when working with non-array iterables like generators or when you need lazy evaluation to save memory. array_map is faster for small arrays but only handles arrays and creates intermediate arrays eagerly.

Question 4

Does Iter work with PHP 8 features like fibers?

Accepted Answer

Iter is built on generators and compatible with PHP 5.5+, but it doesn't explicitly integrate with newer features like fibers. It focuses on iteration primitives, so advanced concurrency would require other libraries.

Question 5

How to chain multiple operations with Iter?

Accepted Answer

Chain functions like map, filter, and reduce directly in a pipeline since they return iterators. For example: iter\map(fn($x) => $x*2, iter\filter(fn($x) => $x > 0, $data)). This maintains laziness throughout.

Question 6

Is Iter suitable for real-time data processing?

Accepted Answer

Yes, due to lazy evaluation, it can handle streaming data efficiently. However, for low-latency requirements, the generator overhead might be a concern compared to optimized array operations in tight loops.

Iter

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