Duplicate or near-redundant functions are either no problem or even useful. But ...

		ipnon 5 months ago \| parent \| context \| favorite \| on: Ask HN: What trick of the trade took you too long ... Duplicate or near-redundant functions are either no problem or even useful. But duplicate or near-redundant data structures are a plague on any codebase. The prophet Perlis declared: "It is better to have 100 functions operate on one data structure than 10 functions on 10 data structures."

interesting, I didn't know that corollary. sounds about right though.