So I'm trying to learn haskell.
I got this code:
main = putStrLn "Hello World!"
And I'm compiling it using the Script plugin for Atom (Whitch in turn uses Cabal).
And i get this error:
<interactive>:1:6: parse error on input ‘=’
Also there is nothing printed to the console.
What am I missing?
NOTE:
I'm trying to follow the Happy Learn Haskell Tutorial
That code is correct if you're putting it in a file. I'm not familiar with that atom plugin, but it sounds like it's trying to put it's input through ghci (basically the Haskell repl) where that code isn't valid.
Have you tried compiling the file by hand, using ghc or even cabal? It should work if there's nothing else wrong in the file.
Turns out that trying to run a piece of Haskell, using Script, without saving the code to a file causes some strange error (Although it never once actually told me to save the file).
Saving the code to a file however changed things.
The code:
main = putStrLn "Hello World"
The error:
Top-level binding with no type signature: main :: IO ()
How ever, this time i got an output:
Hello World
let main = putStrLn "Hello World!".