I rewrote a 900 line class today by writing one generic function that encapsulated a pile of common logic that the monstrosity had copied and pasted with slight

I rewrote a 900 line class today by writing one generic function that encapsulated a pile of common logic that the monstrosity had copied and pasted with slight changes over, and over, and over, and over, ad nauseum, and wound up with less than 100 lines of code. What a glorious day.