Hello there!

Although you might not believe it since I'm going to ask a very very very basic question, I have been using Haskell for educational purposes for a couple semesters now. Nevertheless, I don't think I have ever worked with non-Int number types! :)

I don't understand why I get this error. I mean, apparently "/" is not defined for integers but I don't know how to "cast" the result of the length function into a Double...

fromInteger or fromIntegral. (the former converts an Integer to any numeric type, the latter converts any integral type to any numeric type). --KW 8-)

"Matias Hernandez" writes:

I mean, apparently "/" is not defined for integers but I don't know how to "cast" the result of the length function into a Double...

Prelude> (length [1,2]) / 3

Prelude> fromIntegral (length [1,2])/3 0.666666666666667

Prelude> 2 / 3 0.6666666666666666

Literal 2 means fromIntegral 2, but length::[a]->Int. -- Feri.