> Why is this warning occurred?
> Where can I get infomation about this? (ex: 'nnn' page on manual, articles
> or books)
> 
> # 1; 2;;
> Warning: this expression should have type unit.
> - : int = 2
> 
> --- SooHyoung Oh

Have a look to the FAQ:

http://pauillac.inria.fr/caml/FAQ/pgl-eng.html#avertissements

paragraph entitled ``Sequence warnings''.

Different ways of getting rid of the warning are discussed, including
the most demanding one (and, to my knowledge, the best one): ``understand why
(the warning) is emitted by the compiler''.

Best regards,

Pierre Weis

INRIA, Projet Cristal, Pierre.Weis@inria.fr, http://pauillac.inria.fr/~weis/


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