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You can reach the person managing the list at beginners-ow...@haskell.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Beginners digest..." Today's Topics: 1. formatting? (Alexander Chen) 2. Re: formatting? (Magnus Therning) ---------------------------------------------------------------------- Message: 1 Date: Thu, 7 May 2020 19:01:43 +0200 (CEST) From: Alexander Chen <alexan...@chenjia.nl> To: beginners@haskell.org Subject: [Haskell-beginners] formatting? Message-ID: <1914130608.288460.1588870903...@ichabod.co-bxl> Content-Type: text/plain; charset="utf-8" Hi, tensDigit.hs tensDigit :: Integral a => a ->a tensDigit x = d where xLast = x `div` 10 d = xLast `mod` 10 prelude> load tensDigit.hs parse error on input ‘=’ Perhaps you need a 'let' in a 'do' block? e.g. 'let x = 5' instead of 'x = 5' 4 | d = xLast `mod` 10 | ^ [1 of 1] Compiling Main ( chapter7_8.hs, interpreted ) Failed, no modules loaded. I suspect this has something to do with the spacing (since this is example code) if so could someone explain to me what the rules on spacing are so I can get past this. I am using a simple text editor so if someone has a recommendation for an IDE that simply takes care of this, much obliged!! best, -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.haskell.org/pipermail/beginners/attachments/20200507/f70d5195/attachment-0001.html> ------------------------------ Message: 2 Date: Thu, 07 May 2020 19:23:55 +0200 From: Magnus Therning <mag...@therning.org> To: beginners@haskell.org Subject: Re: [Haskell-beginners] formatting? Message-ID: <87368bodzo....@therning.org> Content-Type: text/plain; charset="utf-8" Alexander Chen <alexan...@chenjia.nl> writes: > Hi, > > tensDigit.hs > > tensDigit :: Integral a => a ->a > tensDigit x = d > where xLast = x `div` 10 > d = xLast `mod` 10 > > prelude> load tensDigit.hs > parse error on input ‘=’ > Perhaps you need a 'let' in a 'do' block? > e.g. 'let x = 5' instead of 'x = 5' > 4 | d = xLast `mod` 10 | ^ > [1 of 1] Compiling Main ( chapter7_8.hs, interpreted ) > Failed, no modules loaded. > > I suspect this has something to do with the spacing (since this is > example code) if so could someone explain to me what the rules on > spacing are so I can get past this. I am using a simple text editor so > if someone has a recommendation for an IDE that simply takes care of > this, much obliged!! > Try lining up the definitions in the where-clause. That'll do it. tensDigit :: Integral a => a ->a tensDigit x = d where xLast = x `div` 10 d = xLast `mod` 10 /M -- Magnus Therning OpenPGP: 0x927912051716CE39 email: mag...@therning.org twitter: magthe http://magnus.therning.org/ If you can tell the truth, you don't have to remember anything. — Mark Twain -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 832 bytes Desc: not available URL: <http://mail.haskell.org/pipermail/beginners/attachments/20200507/e72cf536/attachment-0001.sig> ------------------------------ Subject: Digest Footer _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners ------------------------------ End of Beginners Digest, Vol 143, Issue 1 *****************************************