[Haskell-beginners] strange error inside a case

[PICCA Frederic-Emmanuel]

> What is the type of hdf2mergedcbf' ?

hdf2mergedcbf' :: Path Abs File -> Int -> Int -> IO ()

> Does it work if you write `void (hdf2mergedcbf' (head masters) 1 1)` ?

nop

    • In the expression: void (hdf2mergedcbf' (head masters) 1 1)
      In a case alternative:
          (SomeDataCollection SCollect SHdf5 _)
            -> void (hdf2mergedcbf' (head masters) 1 1)
      In the second argument of ‘($)’, namely
        ‘case col of {
           (SomeDataCollection SCollect SHdf5 _)
             -> void (hdf2mergedcbf' (head masters) 1 1) }’
    |
184 |         (SomeDataCollection SCollect SHdf5 _)          -> void (hdf2mergedcbf' (head masters) 1 1)
    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

HsCompilation exited abnormally with code 1 at Fri Nov 29 19:23:04