Post

✨ Big O ✨ Let me take you on a visual introduction to what big O notation is in my new blog post: samwho.dev/big-o. With big O notation you can better understand how algorithms will perform in practice, finding orders of magnitude improvements often with very simple changes to your code.

Yours, O ✋🔺🤚

@o.dkpr.no

25 Aug 2025

I still don't understand why we can have O(n) but not O(2n) or O(n+1)

Sam Rose

@samwho.dev

Nothing is really stopping you from writing O(2n) if you really wanted to, but you won't find many people doing it. The idea is that as N approaches infinity, what is the most significant term? And in this case it is N itself. The multiplication doesn't change the _growth_ of the function.

25/8/25, 6:54 pm0 reposts0 likes

Yours, O ✋🔺🤚

@o.dkpr.no

25 Aug 2025

It grows twice as fast. Is the point only to show _how_ a function grows?