[Hugs-users] isPrime definition

[Alex Teslin]

Hi, I am a newbie in Haskell and have a trivial question.

I am using Simon Thomson's textbook for learning Haskell with Hugs.
I am stack with exer 5.10, which asks to define isPrime function using divisors function previously defined.
 
I have managed to define the divisor function like this:

divisors :: Int -> [Int]
divisors n = [x | x<-[1..n], n `mod` x == 0]

but when i am trying with isPrime function using divisors and list comprehension - i am lost because the type signature should be isPrime :: Int->Bool

But any list comprehension generates a list, which is not what i want.

Any suggestions please?

Thank you
       
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