[Haskell-cafe] Re: Incremental trasnformations (not Haskell topic)

Ryan Ingram ryani.spam at gmail.com
Sun Dec 28 15:16:02 EST 2008

See "Adaptive Functional Programming" by Acar et al.

Doesn't talk about OO specifically, but rather how to make "updatable"
computations in a mutable language.

There's a Haskell implementation, too.

  -- ryan

2008/12/28 frantisek kocun <frantisek.kocun at gmail.com>:
> Still nobody? Maybe I didn't write it clear. So one more time:
> I have a list of numbers (say Int)
> numberList = [1:Int,2,3,1,2,6,7,8]
> and a number
> sumOfNumberList = sum numberList
> and here comes the question. Imagine the list numberLists is mutable (that's
> why in topic is "not Haskell question") so the calculation doesn't occur
> only once but every time something changed in the list (listener pattern).
> (If the lis tis java List and Int is java Integer, every acces to list
> should trigger event to its listeners, but if I use list of another objects
> e.g. Item with value, every access to list should trigger event to its
> listeners as well as every modification of object Item should triggers its
> listeners (list) and that in turn triggers its listeners) How to make
> transformation of often used functions (map, sum, forall, filter, exists) to
> listeners in OO language? Is there anything (any tool, any paper, any
> blog...) about it?
> Thanks
> Fero
> PS If nobody answers I really stop asking non Haskell questions in this
> mailling list:)
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