Michael Greenberg on 30 Jun 2013 15:37:17 -0700


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Re: workshop request: GHCJS


I'm glad you like the Flapjax work! I've been out of touch with it for a while---it was work I did as an undergraduate, so I'm not sure I'm the right person to present any of it now. (More to the point, I'm pushing hard to my own thesis defense in the fall, so I don't think I can spare the time.)

Cheers,
Michael


On Wed, Jun 26, 2013 at 4:01 PM, Dustin Getz <dustin.getz@gmail.com> wrote:
I had no idea that one or more flapjax committers were based in Philly. Wow. Your stuff is excellent. Would you consider doing a talk or workshop on FRP? 

On Wed, Jun 26, 2013 at 3:32 PM, Michael Greenberg <michael.m.greenberg@gmail.com> wrote:
Research into applying lenses to the DOM isn't news: my undergraduate honors thesis was about using lenses as a view mapping for functional reactive programming (FRP) on the DOM. See <http://www.cis.upenn.edu/~mgree/papers/ugrad_thesis.pdf> for the barely readable document; <http://www.cis.upenn.edu/~mgree/ugrad/lenses/> has the slightly more legible implementation. No one has gone to the trouble of implementing the more recent re-conceptions of lenses (e.g., edit lenses---see the work of Daniel Wagner for what's new in lens-land.). I think that it would be very fruitful---and wouldn't be particularly hard.

This is the first I've heard of Facebook React, and I'm curious to see what their diff algorithm is. In <http://www.cis.upenn.edu/~mgree/papers/icfp2010_matching.pdf>, we found that choosing a diff algorithm presents difficult trade offs. I think the advantage of manipulating the pseudo-DOM in Haskell is that Haskell has a type discipline that's designed for working with complicated trees. Since the pseudo-DOM structure is immutable, monads don't enter into it---it's just good old functional programming.
I'm very curious to see what the programming/engineering community makes of lenses and FRP in general. One problem we encountered when developing Flapjax <http://flapjax-lang.org/> was that developing in FRP tends to be "all or nothing". But since developers are already willing to put up with callback hell, who knows?

Cheers,
Michael

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