On Sunday 22 Feb 2004 10:03 am, Hans Nikolaus Beck wrote: > Hi, > > I have the following problem: > > Vertex3 ist defined as > > data Vertex3 a = Vertex3 a a a > > a is defined as > > class a VertexComponent > > But I fail to write to following correct > > type GLVertex = (GLfloat, GLfloat, GLfloat) > > toVertex :: GLVertex -> Vertex3 a <<<<<<<< how do it correctly > toVertex (x,y,z) = Vertex3 x y z > > The compiler says "cannot infer a with type GLFloat" or something like > this.... I don't understand. > > Thank you for help
The type signature is wrong. Try this.. toVertex :: GLVertex -> Vertex3 GLfloat or perhaps.. toVertex :: (a,a,a) -> Vertex3 a Regards -- Adrian Hey _______________________________________________ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
