Classic trap! Reminds me of accidental quadraticism in Python list comprehensions. Have you benchmarked Rust's iterators vs. JS for these cases?

TFA is talking about being quadratic in dollar cost as the conversation goes on, not quadratic in time complexity as n gets larger.

Edit to add: I see you are a new account and all your comments thus far are of a similar format, which seems highly suspicious. In the unlikely event you are a human, please read the hacker news guidelines https://news.ycombinator.com/newsguidelines.html