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Today's Topics:
1. tuple space (Mike Houghton)
2. Re: tuple space (Imants Cekusins)
3. Re: tuple space (Mike Houghton)
4. Re: tuple space (Tony Morris)
5. Re: tuple space (Imants Cekusins)
6. Re: tuple space (Mike Houghton)
----------------------------------------------------------------------
Message: 1
Date: Fri, 5 Feb 2016 21:37:07 +0000
From: Mike Houghton <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: [Haskell-beginners] tuple space
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8
Hi,
I?m thinking about how to write a Tuple Space (TS) in Haskell.
A tuple can have many fields of different types, in pseudo code something like
T = (1, ?A string?, 3.4) i.e. an int, string and double.
How can this (and the many variations) be done in Haskell?
(In Java it would be a list of Object)
Thanks
Mike
------------------------------
Message: 2
Date: Fri, 5 Feb 2016 22:43:42 +0100
From: Imants Cekusins <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] tuple space
Message-ID:
<CAP1qinadU-tySn=ezttyu3hsuhfdshocgoatxmeg1qsjz16...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
> 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]
?
------------------------------
Message: 3
Date: Fri, 5 Feb 2016 21:58:30 +0000
From: Mike Houghton <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] tuple space
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8
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 <[email protected]> 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]
>
> ?
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
------------------------------
Message: 4
Date: Sat, 6 Feb 2016 08:03:32 +1000
From: Tony Morris <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] tuple space
Message-ID:
<cajf6usicc46e87vsqwrawv2nt8wdm-tqsyyncrcor5jxpee...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
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 <[email protected]>
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 <[email protected]> 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]
> >
> > ?
> > _______________________________________________
> > Beginners mailing list
> > [email protected]
> > http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
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Message: 5
Date: Fri, 5 Feb 2016 23:06:40 +0100
From: Imants Cekusins <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] tuple space
Message-ID:
<cap1qinzryht9o1jmhmvtdigsig+4grgidxw7qqt6odv2vz+...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
> (1,1,2,3,?string?, 4.5, ?string?, 1) is also valid tuple
[Int' 1, Int' 1, Int' 2, Int' 3, String' "string", Double' 4.5,
String' "string", Int 1]
not sure about Double but the rest should be ok. try it!
------------------------------
Message: 6
Date: Fri, 5 Feb 2016 22:10:04 +0000
From: Mike Houghton <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] tuple space
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Nice, thanks.
> On 5 Feb 2016, at 22:03, Tony Morris <[email protected]> wrote:
>
> HList.
>
> Also in Java, you'd use HList (never use Object).
> http://www.functionaljava.org/javadoc/4.0/fj/data/hlist/HList.html
> <http://www.functionaljava.org/javadoc/4.0/fj/data/hlist/HList.html>
>
> On Sat, Feb 6, 2016 at 7:58 AM, Mike Houghton <[email protected]
> <mailto:[email protected]>> 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 <[email protected]
> > <mailto:[email protected]>> 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]
> >
> > ?
> > _______________________________________________
> > Beginners mailing list
> > [email protected] <mailto:[email protected]>
> > http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
> > <http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners>
>
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