Re: [Haskell-cafe] Laziness enhances composability: an example

Hello Cristiano, Thursday, July 9, 2009, 4:55:09 PM, you wrote: the best known example is chessmate implementation in Wadler's "why functional programming matter" but i don't know much about Python iterators, so can't say what is difference. may be its' only simplicity since lazy lists is looks like and processed just as lists while generators in any other language is separate data structure

Hi, I'm wondering what a good example of why laziness enhances composability would be.

I'm specifically looking for something that can't implemented in Python with iterators (at least not elegantly), but can actually be implemented in Haskell.

Thanks,

Cristiano

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