[Haskell-cafe] Lazy lists with with call-by-value reduction strategy.

[Kyle Miller]

Please correct me if I'm wrong, but isn't Haskell secretly doing a set!
when parts of an ADT are evaluated to memoize them?  In the vein of lazy
lists, taking the tail of a list in Haskell would be one such example.

I noticed this secret set! when I was learning about its garbage collector:
I was surprised at first that objects in older generations could ever have
pointers to objects in newer generations!

Kyle


On Tue, Feb 11, 2014 at 5:52 PM, Roman Cheplyaka <roma at ro-che.info> wrote:

> Except Scheme is not pure -- they use set! to achieve memoisation.
>
> I don't think the OP bothers with memoisation in his/her encoding,
> though.
>
> Roman
>
> * Kyle Marek-Spartz <kyle.marek.spartz at gmail.com> [2014-02-11
> 15:54:34-0600]
> > SICP comes to mind:
> http://mitpress.mit.edu/sicp/full-text/sicp/book/node70.html
> >
> > --
> > Kyle Marek-Spartz
> >
> > On February 11, 2014 at 3:47:09 PM, flicky frans (flickyfrans at gmail.com)
> wrote:
> > >
> > > Hello. I am currently writing lists with lazy semantics in the
> > > pure
> > > lambda-calculus with call-by-value reduction strategy.
> > > Here is an example: http://pastebin.com/SvQ5hCSD
> > > Here is a simple interpetator: http://pastebin.com/mejCWqpu
> > > Am I reinventing the wheel? Are there some sources, from where
> > > i can
> > > learn more about lazy evaluation in the strict languages?
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