Following is the definition of codata stream:
codata Stream where
hd : Stream −> A
tl : Stream −> Stream
For simplicity I assume I have just a binary stream. Now I would like to define a function flip : Stream -> Stream , that reverses the order of the stream elements.
Defining: hd(flip S) = head (S) is pretty simple.
However I don't see how one can define tl(flip S)) properly. Does anyone have an idea, if this is possible and if yes, how?
