Amazing, I did avoid hell to collegues by implementing some form of counter in VBA. My most prized coding contribution. 8 lines that evaporated hell (filtering 1000 rows in Excel to find duplicates) into fun.

This is how I started as well. But we had too many typos so I had to find something a little bit 'smarter'.

Next thing on my list is to implement tf–idf to help with free text categorisation.

Sounds great! Feel free to adapt this to your usecase, if useful: https://github.com/yesbabyyes/tfidf

I did levenstein a few time at that job, indeed, anything with operator input will have errors