[Haskell-beginners] More direct binding of IO result

[Arlen Cuss]

> -- Tried this and it didn't work.
> main = do putStrLn (<- readFile "data.txt")
> 

My question; how come fmap doesn's also work here? (though it's not a
syntax-based solution):

Prelude> fmap putStrLn (readFile "data.txt")
Prelude>

I thought it may have operated to make a new IO action, but if that were
the case then ghci should have executed the result here.

A
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