30 May
2006
30 May
'06
6:34 a.m.
Hello Nuno, Monday, May 29, 2006, 10:53:30 PM, you wrote:
I have this type which represents polish expressions (floorplan representation):
data PeAux a = Folha Char | Nodo Char (PeAux a) (PeAux a) deriving Show
The reverse polish expression are the result of doing a post order visit to the tree
to be exact, tree represents an expression itself while you can get _linear_ text from it in polish postfix/prefix or ordinary infix notation by applying various visiting strategies -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com