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  1. main = this
  2. where this = 0
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
Standard input is empty
compilation info
[1 of 1] Compiling Main             ( prog.hs, prog.o )

prog.hs:2:14:
    No instance for (Num (IO a))
      arising from the literal `0' at prog.hs:2:14
    Possible fix: add an instance declaration for (Num (IO a))
    In the expression: 0
    In the definition of `this': this = 0
    In the definition of `main':
        main = this
             where
                 this = 0
stdout
Standard output is empty