Re: [Haskell-cafe] Grokking zippers

2009-03-20 Thread Sean Leather
Martijn van Steenbergen wrote: > > Nathan Bloomfield wrote: > >> arrow? I'm interested in studying this concept in more depth, but I can't >> find a definition to start with. >> >> Any pointers to good books or papers would be greatly appreciated. :) >> > > The wiki page already gives some pointer

Re: [Haskell-cafe] Grokking zippers

2009-03-20 Thread Martijn van Steenbergen
Hi Nathan, Nathan Bloomfield wrote: arrow? I'm interested in studying this concept in more depth, but I can't find a definition to start with. Any pointers to good books or papers would be greatly appreciated. :) The wiki page already gives some pointers to papers; have those been of any he

[Haskell-cafe] Grokking zippers

2009-03-20 Thread Nathan Bloomfield
Hello all- I'm trying to understand the categorical guts underlying zippers. In the Haskell wikibook (and other places) I've seen zippers described roughly as the derivatives of functors. However, I haven't been able to find any references that develop this idea rigorously. For instance, what exac