Do you know JavaScript arrays can have holes? How are empty slots different from undefined? And how do you differentiate between both?
This article dives into sparse arrays and explains various ways to create them and associated gotchas with usage.
JavaScript arrays show object-like behaviours in a variety of ways.
I decided to write about sparse and dense arrays several months ago. I thought it would be easy and imagined writing a masterpiece based off my multi-year experience with arrays.
Alas, my foray into the intricacies of Arrays unearthed surprising discoveries and shattered my brittle expertise. This series of posts describes my learnings and Aha moments.
