21 Mar
2003
21 Mar
'03
8:19 a.m.
Does the "zipper" fall into this category? http://haskell.org/wiki/wiki?TheZipper Markus
You might also find the 'cast' function in Section 3 of "Scrap your boilerplate" useful. http://research.microsoft.com/~simonpj/papers/hmap/ I'm not certain, but it has the right smell. Simon