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Feature request library(aggregate) from SICStus Prolog #59
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With Novacore and Liblets its not needed anymore. |
Adding those predicates would still be an enhancement for Ciao. I reopen it. |
Is there a ciao version where this is already available?
But it doesn't work, when I call it with this here:
Whats missing, a meta predicate declaration before aggregate_all? |
Random number generation is in library(random): http://ciao-lang.org/ciao/build/doc/ciao.html/random.html Calling |
(I edited the previous comment) |
random/3 was not part of my comment or ticket here, the code I random/3 generates in the interval [L,H] whereas SWI-Prolog any comment about random/3 on Ciao Prolog GitHub issues. know. Does anybody care Ciao and SWI-Prolog compatibility? Maybe this can point the way forward? |
Interestingly that was just what I defined:
But why does it throw a random/3 existence error. Should I place a meta_predicate
but the error messsage says:
Will try with a meta predicate directive soon. |
Humm, it works for me:
Is this what you are doing? |
Here is a screenshot of what I already copy pasted into the ticket here: The scrambling of the input, the 3 blanks ' ' is an artefact of your Ciao looks more pretty. It has also removed Note:, yes, yes, yes, aborted. |
Ah, I understand now: make aggregate a module (just put |
Now I could run it. The error in Ciao Prolog is much larger than the missing aggregate_all/3 and msb/1 evaluable function:
And this helper code (file aggregate.p):
|
Also a little strange that it is exactly 100.0 in all runs? |
I did a search in this repository about
aggregate_all/3
. ButI didn't find it. Is this correct that Ciao Prolog has no
library(aggregate) from SICStus Prolog?
An Aggregation Operator for Data-Base-Style Queries
https://sicstus.sics.se/sicstus/docs/4.6.0/html/sicstus/lib_002daggregate.html
I am somehow used to it since it also found its way into
SWI-Prolog. Would it be possible to support the same in
Ciao Prolog as well? Its not urgent, just a feature request.
Here is an example test case:
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