BART E-Prime 2.0 Missing PumpNPopList Nested List

[David McFarlane]

I already replied to Raquel off the list, but for the record in case 
anyone else stumbles upon this...

Wow, I did the initial development on that program (if you open the 
Experiment object you will see my name there) -- a great project 
where I got to expand my E-Prime skills!

PumpNPopList appears as a question mark in the Structure because it 
is generated at run time by the inline code in TrialsInitScript prior 
to running TrialList (which then calls upon the nested 
PumpNPopList).  Yes, really!  It's an unusual and challenging move, 
but I did it that way in order to programmaticaly enforce some 
specific properties on PumpNPopList, and you will find some 
explanation for that in the comments in TrialsInitScript.

If you prefer to replace PumpNPopList with a more normal (and 
non-dynamic) nested List, then you would want a PumpNPopList with a 
"PumpNPop" attribute (but of course, you could figure that out from 
the code in TrialsInitScript -- see the PumpNPopList.AddAttrib 
commands).  Note that nList is just a temporary auxiliary List used 
for populating PumpNPopList and is not used anywhere in the 
Structure, if you make your own PumpNPopList then you may just ignore 
(or delete) nList.  Do be aware that we used inline code to construct 
PumpNPopList in order to enforce some desirable properties, so you 
may want to consider that as you design your replacement PumpNPopList.

BTW, I designed this program at a time when I was exploring the use 
of Lists as a construct for programmed loops, which accounts for my 
peculiar use of a StepList within the TrialProc.  If I were to 
program this today, I might instead use an ordinary Label and Goto to 
do the "step" loop (and then I would have to do the step logging in 
inline code instead of having StepList take care of that 
automatically).  (I also now use the term "code" where I used to use 
"script", but that is another matter.)

-----
David McFarlane
E-Prime training 
online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx
Twitter:  @EPrimeMaster (https://twitter.com/EPrimeMaster )


At 11/18/2013 03:19 PM Monday, Raquel Cowell wrote:
>I recently downloaded an E-Prime 2.0 version of the BART 
>from  http://psychology.msu.edu/lcdlab/programs/.
>
>For the most part, the .es2 file is great, but there seems to be a 
>missing nested list from the TrialList. In the TrialList, there are 
>the following 4 columns: Weight; Nested; Procedure; PayPerPump.
>
>Within the Nested column is the following text: "PumpNPopList". 
>However, the list is never detailed anywhere and the icon placeholder is a "?"
>
>I want to replace the list with the correct information, but I am 
>unsure of what exactly should be included.
>
>Any help or insight would be greatly appreciated. Thanks!

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