Yep. Funny story, this was actually a coding interview homework for a question with order of millions of data rows from a file. The exercise required 10s timing

Yep. Funny story, this was actually a coding interview homework for a question with order of millions of data rows from a file. The exercise required 10s timing requirement, so I decided to do it data centric from start. Interviewers found my style ‚non idiomatic‘, but probably never thought about why my version was done in fractions of a second.