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<DIV><FONT face="Courier New" size=2>Hi,</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>I'm trying to make three haskell classes
and an instance this way:</FONT></DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV><PRE><CODE><SPAN style="FONT: 10pt Courier New"><SPAN class=mygeneral1-comment>------------------------------------------------------------------------------
</SPAN><SPAN class=mygeneral1-keywords1>class</SPAN><SPAN class=mygeneral1-space> (Eq a) => Graph a </SPAN><SPAN class=mygeneral1-keywords1>where
</SPAN><SPAN class=mygeneral1-space> vert :: [a]
ady :: a -> [a]
</SPAN><SPAN class=mygeneral1-keywords1>class</SPAN><SPAN class=mygeneral1-space> (Graph a) => Paths a </SPAN><SPAN class=mygeneral1-keywords1>where
</SPAN><SPAN class=mygeneral1-space> gps :: a -> a -> [[a]]
</SPAN><SPAN class=mygeneral1-keywords1>class</SPAN><SPAN class=mygeneral1-space> (Paths a) => Minimum a </SPAN><SPAN class=mygeneral1-keywords1>where
</SPAN><SPAN class=mygeneral1-space> mgps :: a -> a -> [a]
</SPAN><SPAN class=mygeneral1-keywords1>instance</SPAN><SPAN class=mygeneral1-space> Minimum Char </SPAN><SPAN class=mygeneral1-keywords1>where
</SPAN><SPAN class=mygeneral1-space> vert = ['a' .. 'f'] </SPAN><SPAN class=mygeneral1-comment>-- This is the line of the error message.
</SPAN><SPAN class=mygeneral1-space> ady 'a' = ['b', 'c']
ady 'b' = ['d', 'c', 'e']
ady 'd' = ['f']
gps = bepgr </SPAN><SPAN class=mygeneral1-comment>-- bepgr is defined and implemented in other code's part
</SPAN><SPAN class=mygeneral1-space> mgps = head gps
</SPAN><SPAN class=mygeneral1-comment>------------------------------------------------------------------------------
</SPAN></SPAN>
</CODE></PRE>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>When I try to run this I get: "ERROR:
filepath:line -No member vert in class "Minimum"" I don't know why does this
happen, am I doing something wrong?</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" size=2>Thank you.</FONT></DIV></BODY></HTML>
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