No. left-pad was placing a 4-line solution in a library. prettysize is well deserving of library status.

What caused left-pad is the the ability to delete published code

Yeah, copying an incorrect answer from SO thousands of times is much better!

(The subject at hand isn't whether libraries are good or not, it's whether copying something off the internet is. In the post, it turns out it isn't. If it was a library, the author could have fixed and updated the library, and the issue would be fixed for everyone that uses it. left-pad isn't an issue with libraries per se, it's an issue with library management)

I understand where you're coming from here, but the whole point of this article is at the 4-line solution is wrong (and the author specifically mentioned that every other answer on the stack overflow post was wrong in the same way as well). "Seemingly-simple problem where every naïve solution contains a subtle bug" is exactly the right use case for a well-designed library method.

> “It’s wrong”

But in a completely benign way. I question why a few edge cases of writing 1000kb instead of 1Mb—so not even a misrepresentation—would ever be worth the code bloat. This is about making stuff slightly more convenient to read.

I agree with you— that was a lot of drumming for what turned out to be kind of a nothingburger as far as the "bug".

At the same time, putting this kind of thing in a library (or even a language's stdlib) is worthwhile for exactly this kind of reason— it allows devs to confidently reach for code that other smart people have really agonized over and which definitely covers the corner cases, similar to other common utilities such as sort methods.

One example: I display available memory in my status bar, which expects strings to be a constant width. If it displayed 1000kb, it would cause alignment issues and annoy the heck out of me

You should see the implementation of `std::midpoint`[1].

Accounting for correctness even in edge-cases is what large libraries do better than throwaway bits of code.

[1]: https://github.com/microsoft/STL/blob/6735beb0c2260e325c3a4c...