capacity problem with eprime?

[Rick O'Gorman]

David,

Much appreciated--not only confirms what I concluded, but makes clear 
for me what is going on and how 'unreferenced objects' are meant to be 
used. Thanks very much,

Rick

David McFarlane wrote:
> Rick,
> 
>> As a follow-up to this, I seem to have fixed my problem by deleting
>> unreferenced objects.
> 
> Glad you fixed your problem and reported back, I would not have 
> thought of this.
> 
>> I had assumed that these were essentially ignored
>> by Eprime and that unreferenced objects was a holding area for bits
>> already created. But given that removing some elements (done without
>> reference to whether any had errors within them--I was simply tidying up
>> the script/file) fixed an error, it seems I am wrong in this assumption?
>> Or am I correct that the whole lot was overloading Eprime?
> 
> You are correct insofar as all those unused unreferenced objects are 
> not ignored and they do affect your program.  All the Unreferenced 
> E-Objects get added to the full script and compiled whether or not 
> your program uses them.  You can tell this a couple of ways:  First, 
> any object that raises a compile-time error will still raise a 
> compile-time error even after you "delete" it to Unreferenced 
> E-Objects.  Second, you can just look in the full generated script -- 
> View > Script, select the Full tab, and scroll down to Sub 
> InitObjects, you will see that E-Prime has dutifully added all of 
> your Unreferenced E-Object to be initialized every time you run your program.
> 
> This is one reason that I scrupulously remove any unused E-Objects 
> before I release my programs for general use, I just assumed 
> everybody else did the same.  I also do this because it greatly 
> clarifies reading the program later -- if anybody later has to read 
> my program, all those unused objects will get in the way, especially 
> if some Unreferenced E-Objects get used while others do not.  It is 
> my duty to clean up my mess before I set the program loose.
> 
> So what are Unreferenced E-Objects for, and why does "delete" send 
> objects there instead of actually deleting them?  "Unreferenced 
> E-Objects" is really a misnomer.  It really means "objects that might 
> be used but are not referenced in any simple way by objects in the 
> main E-Studio structure", and we do not have a simpler word phrase to 
> say that.  For instance, you might have an object that gets invoked 
> only by inline script, and E-Prime has no good way to indicate that 
> in the Structure view.  Or, you have a nested list that gets assigned 
> only at run time via an attribute reference, so the Structure has no 
> good way to show this at design time.  So these objects really do get 
> "referenced" in inline script or at run time, but in general E-Prime 
> has no neat way to show this in the Structure view, hence 
> "Unreferenced E-Objects" (well what would *you* call 
> them?).  Follow?  So how do you make these "unreferenced" but really 
> referenced E-Objects?  You could drag the appropriate toolbox icon 
> straight into Unreferenced E-Objects, but many folks find it easier 
> to drag a toolbox icon over onto a Procedure object, and then 
> "delete" it to get it over into Unreferenced E-Objects.  Still 
> following?  Because of this practice, when you "delete" an object 
> from a Procedure, E-Studio never knows whether you really mean to 
> delete the object or just use it in some "unreferenced" way.  As you 
> and most users soon discover, to really delete an object you must 
> delete it from Unreferenced E-Objects.
> 
> Well, you got more from me than you bargained for.  I hope I said 
> something useful in there somewhere, I just sort of wanted to lay 
> that all out for future reference for myself if no one else.
> 
> -- David McFarlane, Professional Faultfinder
> 
> 
> > 

-- 
Rick O'Gorman, PhD
Psychology, Faculty of Development and Society
Collegiate Crescent Campus,
Sheffield Hallam University,
Sheffield
S10 2BP

Phone: 0114 225 5788 Fax: 0114 225 2430

http://www.shu.ac.uk/psychology/staff/OGorman.html

Experience is what you get when you don't get what you want.
                                 --Dan Stanford

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