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,
Alexander Chen
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: magnus@therning.org twitter: magthe http://magnus.therning.org/ If you can tell the truth, you don't have to remember anything. — Mark Twain
Vim (https://wiki.haskell.org/Vim) It takes a little getting used to but
you’ll never go back. You’ll use it for so many thing.
If Vim really isn’t to your liking, Emacs might. (
https://wiki.haskell.org/Emacs) It’s more of an operating system cleverly
disguised as a text editor.
Both of these should be your first choice, in my opinion and experience.
On Thu, May 7, 2020 at 13:02 Alexander Chen
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, _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
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participants (3)
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Alexander Chen -
Frank Martinez -
Magnus Therning