Re: [Choco-users] Newbie question: constrained and instantiated events.

[Malcolm R. <mal...@cs...>]

Thanks, that gives me what I need. My other question is about =20
backtracking. There is a section in the User Guide labeled =20
"backtrackable structures" but it is lacking any content. Could you =20
explain what how it works?

One of the things I have implemented in Eclipse is a variable length =20
list of values. It only creates variables for entries in the list as =20
they are called for (ie, as the lower bound of the length variable =20
increases). The good thing about Prolog is that it automatically =20
handles backtracking over this action. How hard would it be to do =20
something similar in Choco?

Malcolm


On 05/06/2007, at 6:32 PM, Guillaume Richaud wrote:

> Hi,
>
> Yes, choco has fine-grained events (instantiation, removal, bound =20
> modification,...).
> For a small exemple on how you can use it, you can look at:  http://=20=

> choco-solver.net/index.php?title=3DDiffVec.java
>
>
> Hope it helps.
> Guillaume
>
> Malcolm Ryan a =E9crit :
>> Hi,
>>
>> I've been doing some constraint programming in ECLiPSe prolog, =20
>> but  the language is beginning to really annoy me and I've been =20
>> thinking  about migrating to a different platform. Choco looks =20
>> like a  possibility, but I need to make sure it can do the things =20
>> I need.  Eclipse has an event model whereby you can set an action =20
>> to occur  when a particular event occurs on a variable. Defined =20
>> events include  an event whenever the domain is constrained and an =20=

>> event when the  variable is instantiated. Is there an equivalent =20
>> functionality in Choco?
>>
>> Malcolm
>>
>> --
>> Many clever men like you have trusted to civilisation.
>> Many clever Babylonians, many clever Egyptians,
>> Many clever men at the end of Rome.
>>                                - G.K.Chesterton, The Napoleon of  =20
>> Notting Hill
>>
>>
>>
>>
>> ---------------------------------------------------------------------=20=

>> ----
>> This SF.net email is sponsored by DB2 Express
>> Download DB2 Express C - the FREE version of DB2 express and take
>> control of your XML. No limits. Just data. Click to get it now.
>> http://sourceforge.net/powerbar/db2/
>> _______________________________________________
>> Choco-users mailing list
>> Cho...@li...
>> https://lists.sourceforge.net/lists/listinfo/choco-users
>>
>>

--
      "The act of defending any of the cardinal virtues has today all
       the exhilaration of a vice."
                                     - G.K.Chesterton A Defense of =20
Humility