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The Useless UseCallback

news.ycombinator.com Unknown 2025-12-19 20:44:26

28.07.2025 — React, JavaScript, useCallback, Performance — 5 min read #1: The Uphill Battle of Memoization #2: The Useless useCallback I thought I'd written enough about memoization by now, but I feel there is one pattern I'm seeing a lot lately that makes me think otherwise. So today, I want to look at useCallback , and to some extent useMemo , in situations where I think they are totally pointless. Why memoize? There's usually only two reasons to create a memoized version of a function wi

Topics: component copy function usecallback value
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Async Queue – One of my favorite programming interview questions

news.ycombinator.com Unknown 2026-01-31 11:46:01

For the past 7+ years, I've been conducting a programming interview that has been a true personal favorite of mine. It was passed down to me from good friends (Jeremy Kaplan and Carl Sverre, and it was the latter whom I believe invented it). This interview has probably been given by us between 500-1000 times across different companies, and upon googling for "async queue interview", I see tons of results. So, it's probably fine for me to blog about it. My main goal with this blog post is to disc

Topics: callback function interview payload sendonce
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