[Haskell-beginners] tuple space

Tony Morris tmorris at tmorris.net
Fri Feb 5 22:03:32 UTC 2016


HList.

Also in Java, you'd use HList (never use Object).
http://www.functionaljava.org/javadoc/4.0/fj/data/hlist/HList.html

On Sat, Feb 6, 2016 at 7:58 AM, Mike Houghton <mike_k_houghton at yahoo.co.uk>
wrote:

> Thanks for the quick reply!
>
> No, that wouldn’t work as that would tie a tuple to Int, Double,String for
> all tuples.
>
> (1,1,2,3,”string”, 4.5, “string”, 1) is also valid tuple
>
> In Java  I would use
> List<Object> so any number of (non-primitives) can be used.
>
> Thanks
>
> Mike
>
>
> > On 5 Feb 2016, at 21:43, Imants Cekusins <imantc at gmail.com> wrote:
> >
> >> T = (1, ”A string”,  3.4)    i.e. an int, string and double.
> >
> > would this suit:
> >
> > data Object = Int' Int | Double' Double | String' String
> > type T = [Object]
> >
> > ?
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