Merge 4aa93c6 into d846caf

README.md

@@ -411,6 +411,8 @@ What else is out there:
 
 - [Simple pipes with PHP generators](https://www.hughgrigg.com/posts/simple-pipes-php-generators/) by Hugh Grigg. Rationale and explanation for an exceptionally close concept. Probably one can use this library as a drop-in replacement, short of different method names.
 
+- [loophp's Collection](https://github.com/loophp/collection) looks like a viable alternative to this library, as far as processing of multi-gigabyte log files goes. [Supports fluent interface.](https://loophp-collection.readthedocs.io/en/stable/pages/usage.html) It takes the immutability as a first principle, even though PHP's generators are inherently mutable.
+
 - If you're familiar with Java, [package java.util.stream](https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html) offers an implementation of the same concept.
 
 - Submit a PR to add yours.