GitHub Copilot’s Code Brushes

Re:GitHub Copilot’s Code Brushes by Nullabillity on Saturday January 14, 2023 @08:27PM (#34385852)

Chained ifs add a whole lot of visual noise, aren't guaranteed to be total, and introduce the temptation to add more logic into the cases.

That said, I do wish more languages had copied Haskell's guard syntax for this kind of chain... For reference, that looks like:

    cmp x y | (x == Nothing || y == Nothing) = NaN -- (assuming x and y are Maybe, but this would typically be non-idiomatic)
            | x < y = -1
            | x > y = 1
            | x >= y = 0 -- inert bug copied from original, "should" be == instead
            | otherwise = NaN

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Re:GitHub Copilot’s Code Brushes by mpeg on Tuesday January 17, 2023 @09:44AM (#34412919)

I too always find myself wanting features from functional languages, I haven't done much Haskell but love the syntax for pattern matching in Elixir with guards, plus the pipe operator.

[ Parent | on HN ]