<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:12pt"><span style="font-family: times new roman,new york,times,serif;">Thanks Tom. this is what i wanted<br>I do not want "Node a" there, I wants only Node and Tom's solution works.<br>Thanks to all .</span><div><br></div> <div style="font-family: Courier New, courier, monaco, monospace, sans-serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Tom Murphy <amindfv@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> Kak Dod <kak.dod2008@yahoo.com> <br><b><span style="font-weight: bold;">Cc:</span></b> Kyle Murphy <orclev@gmail.com>; "beginners@haskell.org" <beginners@haskell.org> <br> <b><span style="font-weight:
bold;">Sent:</span></b> Friday, 13 April 2012 4:53 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Haskell-beginners] error: Not in scope: data constructor `BinTree'<br> </font> </div> <br>"(BinTree a)" needs to be in parentheses to pattern-match properly.<br><br>data BinTree a = Node (BinTree a) (BinTree) a | EmptyBinTree<br> deriving Show<br><br>On 4/13/12, Kak Dod <<a ymailto="mailto:kak.dod2008@yahoo.com" href="mailto:kak.dod2008@yahoo.com">kak.dod2008@yahoo.com</a>> wrote:<br>> Thank you but<br>><br>> if I change the code like this:<br>><br>> data BinTree a = Node BinTree a BinTree a | EmptyBinTree deriving Show<br>><br>> b1 = Node 3 EmptyBinTreeEmptyBinTree<br>><br>> Then I am get this error:<br>><br>> bintree.hs:1:23:<br>> `BinTree' is not applied to enough type arguments<br>> Expected kind `?', but `BinTree' has kind `k0 -> *'<br>>
In the type `BinTree'<br>> In the definition of data constructor `Node'<br>> In the data type declaration for `BinTree'<br>> Failed, modules loaded: none.<br>><br>><br>><br>><br>> ________________________________<br>> From: Kyle Murphy <<a ymailto="mailto:orclev@gmail.com" href="mailto:orclev@gmail.com">orclev@gmail.com</a>><br>> To: Kak Dod <<a ymailto="mailto:kak.dod2008@yahoo.com" href="mailto:kak.dod2008@yahoo.com">kak.dod2008@yahoo.com</a>><br>> Cc: "<a ymailto="mailto:beginners@haskell.org" href="mailto:beginners@haskell.org">beginners@haskell.org</a>" <<a ymailto="mailto:beginners@haskell.org" href="mailto:beginners@haskell.org">beginners@haskell.org</a>><br>> Sent: Friday, 13 April 2012 4:38 PM<br>> Subject: Re: [Haskell-beginners] error: Not in scope: data constructor<br>> `BinTree'<br>><br>><br>> Your constructor
is called Node, not BinTree.<br>> data BinTree a = Node a (BinTree a) (BinTree a) | EmptyNode<br>> b1 = Node 3 EmptyNode EmptyNode<br>> -R. Kyle Murphy<br>> Sent from my phone.<br>> On Apr 13, 2012 12:24 PM, "Kak Dod" <<a ymailto="mailto:kak.dod2008@yahoo.com" href="mailto:kak.dod2008@yahoo.com">kak.dod2008@yahoo.com</a>> wrote:<br>><br>> if i compile the following code I get "bintree.hs:3:13: Not in scope: data<br>> constructor `BinTree'"<br>>><br>>><br>>><br>>>data BinTree a = Node BinTree a BinTree a | EmptyBinTree deriving Show<br>>><br>>>b1 = (Node (BinTree 3) EmptyBinTree)<br>>><br>>><br>>><br>>>please help<br>>><br>>><br>>>-kak<br>>><br>>><br>>>_______________________________________________<br>>>Beginners mailing list<br>>><a ymailto="mailto:Beginners@haskell.org"
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