[rules-users] how to write the rule to match the latest facts

[Wolfgang Laun]

You'll need an attribute that determines the order. If your facts are
events, there's the timestamp. Otherwise, add a counter.

   $latest: F( $c: counter )
   not F( counter > $c )

-W

On 05/06/2013, suntrian <suntrian at 126.com> wrote:
> i inserted several facts of one type into the workmemory , but i need just
> the latest one, how should i write the rule to match the latest fact
>
>
>
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