'now'

[Paul Payne]

How does one reference "now"? This doesn't work:

@!{pastMilestone}

past(?MILESTONE) :- ?MILESTONE:Milestone, ?MILESTONE[due->?DUE], ?DUE < \dateTime[now].

Also, is \dateTime 'now' calculated only at time of loading? Or during querying/rule execution as well?

[Michael Kifer]

look it up in The Primitive Type \dateTime

\dateTime[now->?n]@\basetype.

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[Paul Payne]

I did, but maybe I'm not smart enough to understand it. :(

On Wednesday, July 17, 2019 at 4:43:15 PM UTC-7, Michael Kifer wrote:

look it up in The Primitive Type \dateTime

\dateTime[now->?n]@\basetype.

On 7/17/19 7:30 PM, Paul Payne wrote:

How does one reference "now"? This doesn't work:

@!{pastMilestone}

past(?MILESTONE) :- ?MILESTONE:Milestone, ?MILESTONE[due->?DUE], ?DUE < \dateTime[now].

Also, is \dateTime 'now' calculated only at time of loading? Or during querying/rule execution as well?

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[Marc Hadfield]

Thanks for this - it was unclear to me that the "@\basetype" needs to be included in these cases.  Is it common practice to always include:

:- importmodule{\basetype}.

?

On Thu, Jul 18, 2019 at 4:56 PM Paul Payne <ppa...@xinova.com> wrote:

I did, but maybe I'm not smart enough to understand it. :(

On Wednesday, July 17, 2019 at 4:43:15 PM UTC-7, Michael Kifer wrote:

look it up in The Primitive Type \dateTime

\dateTime[now->?n]@\basetype.

On 7/17/19 7:30 PM, Paul Payne wrote:

How does one reference "now"? This doesn't work:

@!{pastMilestone}

past(?MILESTONE) :- ?MILESTONE:Milestone, ?MILESTONE[due->?DUE], ?DUE < \dateTime[now].

Also, is \dateTime 'now' calculated only at time of loading? Or during querying/rule execution as well?

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[Michael Kifer]

If you include importmodule, you need to be certain the imported method names don't clash with the host methods names. Note that @\btp is an acceptable abbreviation and may be better
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