Re: [racket-users] Datalog Question

[Jay McCarthy]

Something like

kevin(Y) :- foo(x, Y), Y != 3.
kevin(Y)?





On Wed, Jan 31, 2018 at 5:13 PM, Kevin Forchione  wrote:
> Can anyone tell me how I would use the datalog = and != tokens? The 
> documentation says they can separate terms, such as  != . In the 
> program below, how would I create a query for foo(x, ?) where ? is not 3?
>
> #lang datalog
>
> foo(bil, 1).
> foo(bob, 3).
> foo(joe, 2).
>
> I imagine I’d have to create a rule of some sort.
>
> -Kevin
>
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-- 
-=[ Jay McCarthy   http://jeapostrophe.github.io]=-
-=[ Associate ProfessorPLT @ CS @ UMass Lowell ]=-
-=[ Moses 1:33: And worlds without number have I created; ]=-

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[racket-users] Datalog Question

[Kevin Forchione]

Can anyone tell me how I would use the datalog = and != tokens? The 
documentation says they can separate terms, such as  != . In the 
program below, how would I create a query for foo(x, ?) where ? is not 3?

#lang datalog

foo(bil, 1).
foo(bob, 3).
foo(joe, 2).

I imagine I’d have to create a rule of some sort. 

-Kevin

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