Maybe I'll try to write something in, if I can swing it.

Basically, with assert, you can incorporate database modifications as part 
of a query.

Here is an example:

1 ?- assert(person(dNolen)).
true.

2 ?- person(X), assert(coolguy(X)).
X = dNolen.

3 ?- coolguy(X).
X = dNolen.

On Saturday, 16 March 2013 17:46:50 UTC-4, David Nolen wrote:
>
> Doesn't exist and I'm not that familiar with assert. Patch welcome of 
> course.
>
>
> On Sat, Mar 16, 2013 at 5:24 PM, JvJ <kfjwh...@gmail.com <javascript:>>wrote:
>
>> I realize that it is possible to enter facts into the core.logic database 
>> with the facts function.  However, I'm looking for something more like the 
>> Prolog assert; a relational operator with a side effect of adding facts to 
>> the db.  Is there anything like that? 
>>
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