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haskellsublimetext3ghci

Haskell ghci Variable not in scope

Hello im using sublime text 3 and my cmd shell with ghci. I wrote following function in st3:

testing :: Int -> Bool
testing 0 = True
testing 1 = False
testing n = testing(n mod 2)

I know haskell provides an even function but we have to write our own even function so i came up with this. When im loading the file into the ghci:

:cd <pathtofile>
:l myfile.hs

and try to execute my function with 

testing 10

i get this error: 

 Variable not in scope: testing :: t0 -> t

I should probably mention that testing :: Int -> Bool shares the file with a fibonacci function but that shouldnt be the problem right? Any help appreciated!

Solution

  • n mod 2 is wrong syntax, you have two possibilities here:

    • mod n 2
    • n `mod` 2