Oh, I should know that. Thank you. By the way, is it only valid when "let" only affects the one expression after that? I read "where vs let" in the HaskellWiki but all the examples are "let ... in".
在 2010年 1月 17日 星期日 22:13:14，Maciej Piechotka 寫道: > On Sun, 2010-01-17 at 18:10 +0800, VoidPrayer wrote: > > let ... > > in ... > > > > I guess GHC is finding where "in" is. > > Except that: > > main = do l <- getLine > let l' = lines l > print l' > > Is perfectly valid without in. Similary: > > something = proc (x, y) -> do x' <- someArrow -< x > let z = x + y + x' > returnA -< z > > Regards > > > _______________________________________________ > Haskell-Cafe mailing list > [email protected] > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
