How is associateBy useful to improve the performance of finding elements? Consider associating elements to a map by @marcinmoskala 👇 https://kt.academy/article/ek-associate

Very good and understandable texts. Already bought the book 😉

glad to hear so. On behalf of Marcin - thank you :)

This item will be added soon, I am working on two other new items I want to add to this chapter.

Really excited to read more 👌