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Parse Error Possibly Incorrect Indentation Haskell

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All rights reserved.REDDIT and the ALIEN Logo are registered trademarks of reddit inc.πRendered by PID 30798 on app-531 at 2016-10-23 23:50:36.714372+00:00 running e8b52b1 country code: IL. Details can be found in http://haskell.org/onlinereport/syntax-iso.html#sect9.3 Previous message: [Haskell-beginners] Re: let indenting problems Next message: [Haskell-beginners] Re: let indenting problems Messages sorted by: [ date ] [ thread ] [ subject http://www.haskell.org/haskellwiki/Converting_numbers permalinkembedsaveparentgive gold[–]Xelank 0 points1 point2 points 2 years ago*(0 children)Put this in a file that ends with .hs stddev :: [Double] -> Double stddev nums = let len = fromIntegral $ length haskell share|improve this question asked Aug 7 '13 at 18:38 Thalatta 1,74032047 add a comment| 1 Answer 1 active oldest votes up vote 7 down vote accepted You have an extra http://back2cloud.com/parse-error/parse-error-possibly-incorrect-indentation.php

We can actually specialize this to [Double] -> Double if you'd rather use concrete types. The trick here is that length will only get you Ints. Passing different value (link value) from VF page to VF component and display it on screen Windows is missing in GRUB! I have to double every second item from the right. http://stackoverflow.com/questions/27181476/haskell-parse-error-possibly-incorrect-indentation-or-mismatched-brackets

Haskell If Then Else Indentation

haskell share|improve this question edited Nov 28 '14 at 6:39 Chris Martin 15.4k23049 asked Nov 28 '14 at 3:31 giang271291 316 add a comment| 2 Answers 2 active oldest votes up Not the answer you're looking for? permalinkembedsavegive gold[–]timmy_tofu 0 points1 point2 points 1 year ago(10 children)doubleEveryOther :: [Integer] -> [Integer] doubleEveryOther lst | [] = [] | len lst `mod` 2 == 0 = doubleEveryOther' reverse lst | otherwise

It can be simplified quite a bit. Additionally, in Haskell we call % mod, and you can use it infix as `mod` (%) comes from Data.Ratio and we use it to define rational numbers. Browse other questions tagged loops haskell or ask your own question. permalinkembedsaveparentgive goldaboutblogaboutsource codeadvertisejobshelpsite rulesFAQwikireddiquettetransparencycontact usapps & toolsReddit for iPhoneReddit for Androidmobile websitebuttons<3reddit goldredditgiftsUse of this site constitutes acceptance of our User Agreement and Privacy Policy (updated). © 2016 reddit inc.

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This should helps you: randSeq :: Integer -> String randSeq n = undefined -- I don't know how it is implemented {- To obtain random number: -} randInteger :: IO Integer share|improve this answer answered Aug 7 '13 at 18:42 Tikhon Jelvis 48.7k14134179 aha! permalinkembedsavegive gold[–][deleted] 0 points1 point2 points 2 years ago(0 children)I didn't literally type that, I just didn't know the character for Haskell notes. Are there any historically significant examples?

Haskell Indentation Rules

Download in other formats: Comma-delimited Text Tab-delimited Text RSS Feed Powered by Trac 1.0.9 By Edgewall Software. El contenido está disponible bajo GNU Free Documentation License 1.3 or later a menos que se indique lo contrario. Haskell If Then Else Indentation Related -1parse error (possibly incorrect indentation)4Haskell: parse error (possibly incorrect indentation or mismatched brackets) with list comprehension0haskell error parse error (possibly incorrect indentation)1Haskell parse error (possibly incorrect indentation or mismatched brackets)0parse Parse Error On Input Can anyone give me a hand? 17 commentsshareall 17 commentssorted by: besttopnewcontroversialoldrandomq&alive (beta)[–]NihilistDandy 1 point2 points3 points 2 years ago*(11 children)It's because you used let in a function declaration.

Edit: Here's my newfound errors: functions.hs:6:24: No instance for (Fractional Int) arising from a use of `/' Possible fix: add an instance declaration for (Fractional Int) In the expression: (sum nums) navigate here refer to bracket issues, and say where the bracket started. The guard needs to be a Bool. doubleEveryOther' (x,y,xs) implies that the argument is a 3 element tuple. Haskell Guards

When did the coloured shoulder pauldrons on stormtroopers first appear? tr command has no effect when used in $() and saved in a variable What is the possible impact of dirtyc0w a.k.a. "dirty cow" bug? Why not to cut into the meat when scoring duck breasts? http://back2cloud.com/parse-error/parse-error-possibly-incorrect-indentationfailed-modules-loaded-none.php asked 3 years ago viewed 5261 times active 3 years ago Related 0haskell error parse error (possibly incorrect indentation)1Haskell parse error (possibly incorrect indentation or mismatched brackets)0parse error (possibly incorrect indentation

The argument type must agree. replace all free occurences of TyVar in tv with the Type in tv while avoiding new captures. –Phyx Oct 24 '11 at 7:17 add a comment| 2 Answers 2 active oldest Human vs apes: What advantages do humans have over apes?

Also you have a small typo in the type signature - need capital i Integer.

I'm not looking to start that argument all over again, tabs are just fine, but I would recommend spaces since GHC interprets tabs as 8 spaces, and while it may look You need to do this in ghci, but in source files let is only used in let ... One thing to note is that haskell's type system does not implicitly convert numericals for you (such as from int to double in C) so you'll need functions like fromIntegral to Join them; it only takes a minute: Sign up parse error (possibly incorrect indentation) up vote 0 down vote favorite when i execute the following lines of code i get the

loops haskell share|improve this question edited Jun 9 '14 at 18:09 Jeremy 2,88182753 asked Apr 24 '14 at 18:55 A77ak 207 1 This won't compile even if you fix the I avoided using the 'let' keyword like below but it still yields the same error pair = randSeq n ++ " | " ++ randSeq n where n = randomR (1,10) You probably intended to use the cons operator (:) instead of the tuple constructor (,) : doubleEveryOther' (x:y:xs) permalinkembedsaveparentgive gold[–]rwobben[S] 0 points1 point2 points 1 year ago(3 children)Then I see this error message this contact form Reduce function is not showing all the roots of a transcendental equation more hot questions question feed lang-hs about us tour help blog chat data legal privacy policy work here advertising

What's the difference in sound between the letter η and the diphthong ει? tv<-t2 does not make any sense . Assuming the lexer is sufficiently modular, this should be easy (at a guess), and not complicate any other part of the compiler. The Haskell type system basically forces you to specify an ordering between IO actions, typically done using do.

Join them; it only takes a minute: Sign up parse error (possibly incorrect indentation or mismatched brackets) up vote 0 down vote favorite I have to do a problem which receive What is the main spoken language in Kiev: Ukrainian or Russian? share|improve this answer answered Oct 24 '11 at 4:03 Satvik 9,97912539 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Should I boost his character level to match the rest of the group?

length. share|improve this answer edited Nov 28 '14 at 8:54 answered Nov 28 '14 at 8:47 chi 41k24488 Thanks for making sense of why pair must return an action and more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Entonces, si ponemos tabs, espacios, enters de menos o de más, obtendremos un sólo error: parse error: “possibly incorrect indentation or mismatched brackets” Lo que significa: "che, revisá tus withespaces; mientras

So everything is working as expected here. permalinkembedsaveparentgive gold[–]rwobben[S] 0 points1 point2 points 1 year ago(0 children)thanks, At second look I do not see the acc but I have to think what I can put after the lst is empty. tr command has no effect when used in $() and saved in a variable Are illegal immigrants more likely to commit crimes? permalinkembedsaveparent[–]NihilistDandy 3 points4 points5 points 2 years ago(0 children)Get through the first couple of chapters of Learn You A Haskell and you should be golden.

I made sure to use space for indentation. permalinkembedsaveparentgive gold[–]Die-Nacht 0 points1 point2 points 2 years ago(2 children)You can't use / on an int. N(e(s(t))) a string Passing different value (link value) from VF page to VF component and display it on screen Should I tell potential employers I'm job searching because I'm engaged? There are a few other type errors that I can see if you want to know what they are, but I dunno if you'd prefer to work them out yourself after

You won't be able to vote or comment. 012parse error (possibly incorrect indentation or mismatched brackets) (self.haskell)submitted 1 year ago by rwobbenHello, IM learning haskell with the cis194 course and im at the first week. Tabs for alignment, ironically, aren’t pretty =D –Ryan♦ Apr 24 '14 at 20:29 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using