Or just make the function take two arguments. And then use currying (if your language supports it). A lot of this depends on language. I definitely agree with

Or just make the function take two arguments. And then use currying (if your language supports it). A lot of this depends on language. I definitely agree with you saying its suggestions, not hard rules. Unfortunately the author of the page keeps saying 'always' as if it's hard and fast rules. Understand why and when first, then use where appropriate.