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  1. insideSum :: (Float, Float) -> Float
  2. insideSum (a,b) = a + b
  3.  
  4. sumTuple :: [(Float, Float)] -> Float
  5. sumTuple [] = 0
  6. sumTuple (x:xs) = insideSum x + sumTuple xs
  7.  
  8. main = print insideSum (2.0,1.1)
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:8:7:
    Couldn't match expected type `(t1, t2) -> t'
           against inferred type `IO ()'
    In the expression: print insideSum (2.0, 1.1)
    In the definition of `main': main = print insideSum (2.0, 1.1)
stdout
Standard output is empty