[Haskell-beginners] having trouble with helloworld style program

[David Place]

>> main =do
>>   x<-getLine
>>   y<-return x
>>   print $ stringToInt y
> 
> This is exactly equivalent to the other methods, but has the additional
> 'return', which is a no-op.  Please do not suggest such a style.  
> 

Really?  Without the return it will not work. So, it isn't a noop.   Stylistically, I like it better than the 'let' in 'do' notation.  
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