Re: [Swarm-Support] Sending parameters via message: m()

[Paul E. Johnson]

James Keirstead wrote:

> Hi,
>
> I'm just beginning with SWARM and seem to be having trouble with some
> basic syntax issues.  I've searched the web but can't seem to find
> anything on the most basic question - such as:
While searching the "Internet", one is well advised to begin with the  
FAQ or the User Guide.  I'd suggest:
http://www.ku.edu/~pauljohn/SwarmFaq/SwarmOnlineFaq.html#6.7
as well as
http://lark.cc.ukans.edu/~pauljohn/Swarm/Beta/SwarmUserGuide/swarm.user.user2.04-macro.sect1.html
(search for the term "wrapper")
I feel certain there  are many working examples illustrating the wrapper 
idea in here
http://www.ku.edu/~pauljohn/SwarmFaq/WorkingExampleCode/

for example

http://www.ku.edu/~pauljohn/SwarmFaq/WorkingExampleCode/objc/MapIntegerIndex.txt
http://www.ku.edu/~pauljohn/SwarmFaq/WorkingExampleCode/objc/serialization3.m

> 1) How do I send parameters via message: m()?
>
> In buildActions of ModelSwarm.m I've got this code excerpt and I want to
> pass parameters for getDistance X and Y.
>
>  modelSchedule = [Schedule createBegin: self];
>  [modelSchedule setRepeatInterval: 1];
>  modelSchedule = [modelSchedule createEnd];
> [modelSchedule at: 0 createActionTo: aCustomer message:
> M(getDistanceX:Y:)];
>
> This will compile and run, granted with garbage numbers since I don't
> actually pass anything to getDistance.  I've seen reference to
> [modelSchedule ... message: M(getDistanceX:Y):20:30]; but I get errors
> with that syntax.
>
> 2) How do I refer to the properties of an object?  I've tried
> aCustomer.xPos, where aCustomer is a Swarm Object called Customer with
> an internal variable called xPos, but get "request for member 'xPos' in
> something not a structure or union".
>
> Thanks for your help
>
> Cheers,
> James Keirstead
>
> _______________________________________________
> Support mailing list
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> http://www.swarm.org/mailman/listinfo/support
>  


--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ukans.edu/~pauljohn
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66045                FAX: (785) 864-5700