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Parse Error On Input Data


To find the number of X completed, when can I subtract two numbers and when do I have to count? Why isn't tungsten used in supersonic aircraft? JB Oh god this was so annoying! It is rare you'll see an example that uses a '{' when it could be elided. Source

What you could do is put the following in the Haskell file: myHandle = do h <- IO.openFile "testtext" IO.ReadMode return h Though if you think about that for a bit, Okay, i'll go read up first. –Karthick Dec 19 '10 at 11:18 add a comment| 2 Answers 2 active oldest votes up vote 8 down vote accepted You can only use Have you - by any chance - mixed tabs and spaces? Top Qoppa Posts: 694 Joined: Sat Nov 24, 2007 9:32 pm UTC Location: Yes. you could check here

Ghci Define Function

When if is used for sequencing IO it is not uncommon to see an else that returns a null value: main = do startNetwork <- askUser "Network? " if startNetwork then more hot questions question feed lang-hs about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Thanks guys.Code: Select all-- CS 8 Problem Set 2
-- Author: Matt Stone

-- A module for creating and handling directed graphs

module Digraph (AdjList, Digraph, Edge,
Digital Alarm Clock What's difference between these two sentences?

Previous company name is ISIS, how to list on CV? up vote -2 down vote Try [h | h <- IO.openFile "testtext" IO.ReadMode] share|improve this answer answered Dec 19 '10 at 10:08 Oswald 22.8k22251 5 This is completely wrong. Granted, it produces type error when the most common definition is used. –Oswald Dec 20 '10 at 0:58 add a comment| Your Answer draft saved draft discarded Sign up or In a Haskell file, you're only allowed to write bindings using =.

Thanks!Code: Select all-- CS 8 Problem Set 2
-- FA.hs
-- Author: Matt Stone

module FA where

import Digraph

data Automaton a b = FA {graph :: Digraph Haskell Newtype Is a rebuild my only option with blue smoke on startup? I've tried removing the if-then-else portion since my prof told us it was optional and using (graph Char Int) instead of graph as a parameter, but neither worked. We can use GHCi to look at the type signature of expressions by using the :t command:Prelude> :t 'r''r' :: CharPrelude> :t TrueTrue :: BoolWe see that the character 'r' has

Top stone915 Posts: 42 Joined: Wed Jan 07, 2009 4:31 am UTC Re: Haskell - "Parse error on input" Quote Postby stone915 » Mon Jan 26, 2009 5:24 am UTC Berengal AAA+BBB+CCC+DDD=ABCD How do you say "you all" in Esperanto? vBulletin 2000 - 2016, Jelsoft Enterprises Ltd. This time instead of pattern matching on a String we are matching on a Bool.

Haskell Newtype

Cannot use hat in self-made command What is the main spoken language in Kiev: Ukrainian or Russian? sort command : -g versus -n flag Why do you need IPv6 Neighbor Solicitation to get the MAC address? Ghci Define Function let x = if b then y -- compare to x = b? What am I doing wrong? [EDIT] Source and output: http://pastebin.com/KvEvggQK haskell share|improve this question edited Dec 19 '10 at 10:59 asked Dec 19 '10 at 9:59 Karthick 1,08531327 If

Should I boost his character level to match the rest of the group? this contact form One advantage of Haskell is that there are often many ways of performing the same action, including iterating over lists. 1.6 Guards (The following two tips on guards were contributed by I eventually came across this blog post which points to a mailing list thread from a few years ago where pjd explains that the ‘let' construct is required when defining a permalinkembedsaveparentgive gold[–]bss03 3 points4 points5 points 2 years ago(1 child)Not just GHC.

It turns out that we know an awful lot about the function just from the type signature.We know this function is pure because all functions in Haskell are pure by default. Line 9, character 16 is the beginning of the declaration of empty in the module interface. The time now is 12:47 AM. http://kiloubox.com/parse-error/parse-error-on-input.html In both cases, the error messages don't help to identify the problem. (Entry added by Benjamin L.

Code: Select all_=0,w=-1,(*t)(int,int);a()??~/d~/\\b\x7F\177l*~/~djal{x}h!\005h";(++w
?x??'l:x^(1+ ++l);}??>main(){t=&O;w=a();} Top dosboot Posts: 143 Joined: Sun Jul 01, 2007 5:26 am UTC Re: Haskell - "Parse error on input" Quote Postby dosboot » Thesis reviewer requests update to literature review to incorporate last four years of research. Sound and Fury News & Articles Serious Business XKCD Meetups General Numberologics, Alchemy, Linguinomics, and other Academiology Mathematics Science Fictional Science Language/Linguistics

permalinkembedsaveparentgive gold[–]bss03 1 point2 points3 points 2 years ago(0 children)It's all about the layout rules that let you elide brace and semi-colon characters by indenting your code in certain ways.

Be Sociable, Share! Fixed. y What is x when b is false? TeX capacity exceeded with beamer Does "when ~ dies, deal n damage to all players/creatures" have a name?

It's unlikely that your text editor and GHC agree on how many spaces each tab should count as, so if you mix tabs and spaces things that look fine to you Related 0how to write numbers in lambda using ghci93How to define a function in ghci across multiple lines?3Why can't I define a type in GHCi?29I taught ghci to compile my StackOverflow x = b? Check This Out sort command : -g versus -n flag How to explain the existence of just one religion?

haskell share|improve this question asked Sep 3 at 17:36 DoubleOseven 1907 7 Not enough close parens. –amalloy Sep 3 at 17:40 geese thanks! :) –DoubleOseven Sep 3 at Once you have more experience with Haskell, it will be easier to give concrete definitions of the terms. Why does a full moon seem uniformly bright from earth, shouldn't it be dimmer at the "border"? You won't be able to vote or comment. 678Beginner - Parse Error on Input '=' (self.haskell)submitted 2 years ago * by zeltolI am studying from Learn You a Haskell for Greater Good.

really nice tutorial, you should continue it ;) February 28, 2009 at 8:27 AM Anonymous said... Posted by Jeremy Shaw at 1:00 PM 9 comments: Leah said... As I was typing that, I realized I forgot to add a comma after insertVertex when I commented out the other functions I need to implement. permalinkembedsaveparentgive gold[–]eigenduck 1 point2 points3 points 2 years ago(0 children)The layout rules mean that it matters how far a line is indented.

Although the first line already told us the exact file, line number, and column, the context information can sometimes help you understand how the compiler sees the code better. What exact message are you getting?Code: Select allps2.hs:9:16: parse error on input `empty'
EDIT: I counted the lines, and line 16 isn't the definition of the empty function, it's this:Code: Select Student discount for Frankfurt Radio Symphony Orchestra Absolute value of polynomial N(e(s(t))) a string Should I tell potential employers I'm job searching because I'm engaged? Windows is missing in GRUB!

Thunder, I get the same error. Why would breathing pure oxygen be a bad idea? Problem solved. The fuckup probably happens there.

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