This is factually untrue though. Twitter was making money in 2018 and 2019 (to the tune of ~1.2B/year in net profit out of ~3B revenue, which is a fairly high profit margin) they lost quite a bit of money in 2020 and less in the years thereafter. However, even in the years where they had negative net income EBITDA remained positive suggesting the losses were upfront investments that would be expected to be amortized over the coming years.
The only reason Twitter is in deep financial shit right now is because Elon acquired it in a leveraged buyout and the cost of servicing the debt is estimated around 1B/year.
It's a hash of everything that goes into a commit, including the commit message. The idea is that nothing that makes up a commit can change without changing the hash.
Mid-30s and no regrets so far after roughly 12 years of experience. I've done mobile development (Symbian, yes that Symbian, iOS and Android) backend (nodejs, erlang, PHP, python) data engineering and probably a host of other things that don't spring to mind immediately. That being said, I've mostly been working in startups (the longest being the current stint of nearly 8 years now from early employee to IPO) and generalists are generally really well appreciated in those settings.
I like how you think labels correctly label anything. I happen to work at a music streaming service (not Spotify) and I can definitely say that those datasets are insanely noisy and generally you can't really trust labels to, well, label their data correctly for anything.
The only reason Twitter is in deep financial shit right now is because Elon acquired it in a leveraged buyout and the cost of servicing the debt is estimated around 1B/year.