Philip

I have updated Part I of the book 🙌 which is probably now ready for publication. 🤩

> the Scala org has a strong interest in keeping it alive, as it's mentioned in Scala books and such. There is also this course: https://www.coursera.org/learn/scala-parallel-programming. IIRC, when I went...

Maybe instead of just saying that the aggregate function > is not relevant for sequential collections. Use `foldLeft(z)(seqop) instead., "2.13.0 the [Scala Doc for aggregate](https://github.com/scala/scala/blob/v2.13.10/src/library/scala/collection/IterableOnce.scala#L1122) could also say that aggregate...