Pattern matching in Haskell and F#

— Posted inCoding — 1 min read

After I had to deal with the fizzbuzz programmer test, I became interested how pattern matching works in Haskell and F#. I found the following solution for Haskell on the web.

{-
 - Fizzbuzz, https://wiki.haskell.org/index.php?title=Fizzbuzz&oldid=33893 (last visited January 19, 2020).
 -}
fizz n | n `mod` 15 == 0 = "FizzBuzz"
       | n `mod` 3 == 0 = "Fizz"
       | n `mod` 5 == 0 = "Buzz"
       | otherwise = show n

main = mapM_ putStrLn $ map fizz [1..16]

And the following solution for F#.

// https://fsharpforfunandprofit.com/posts/match-expression/
let fizzBuzz number =
    match number with
    | i when i % 15 = 0 -> printfn "fizzbuzz"
    | i when i % 3 = 0 -> printfn "fizz"
    | i when i % 5 = 0 -> printfn "buzz"
    | i -> printfn "%i" i

[1..16] |> List.iter fizzBuzz

As I am no expert in these languages, I have no idea if those solutions are elegant or not. I just had a look at them to compare the different implementations. Please have a look at the web sites to find out more.

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