What is the current row in a list

[David McFarlane]

OK, let me try to straighten this out.

First, you all need to go back and look at the online E-Basic Help and 
look at the "Context" and "List" entries where much of this gets explained.

Second, as you will note there, List.GetAttrib is different than 
Context.GetAttrib.  List.GetAttrib requires that you supply both a level 
number and an attribute name, whereas Context.GetAttrib takes only an 
attribute name.  So Eliezer's suggestion would not work because it uses 
the wrong syntax.  It also would not work because a List object only 
knows its own attributes (columns) and nothing else.

At least Eliezer knew to submit the attribute name as a quote-enclosed 
string, e.g, "Sample", which gets me to point three.  As clearly 
explained and illustrated in the documentation, the attribute name must 
be a *string*, you cannot use a mere variable name or property.  Thus, 
Greg should simply have used
c.GetAttrib("BlockList.Sample")  ' note the use of quotes!
in the first place.

Finally, in reference to some other postings on this topic, there is 
exactly one and only one Context object created in any E-Prime program, 
and it is automatically given the simple name "c".  That Context object 
always contains *all* the attributes active at the current time in the 
program.

You all really need to take a time out and get some basic lessons in 
object-oriented programming.

Regards,
-- David McFarlane, Professional Faultfinder


Eliezer Kanal wrote:
> The error is in how you're calling GetAttrib. "c.GetAttrib" means "get  
> attribute from c", or "get attribute from context". Context is sort of  
> the base-level storage of the entire experiment. You don't want to get  
> an attribute of the context, you want an attribute of BlockList. I  
> think you want to try
> 
> str(BlockList.GetAttrib("Sample"))
> 
> I don't have eprime on this computer, though, so I can't test that.  
> Good luck -
> 
> Cheers,
> Eliezer Kanal
> PhD Candidate, Bioengineering
> Laboratory for Computational Neuroscience
> University of Pittsburgh
> 
> 
> 
> On Feb 22, 2009, at 10:55 PM, Greg Osenbach wrote:
> 
>> Hmm.. This just seems to give me an error
>>
>> "Sample is not a property of the Object"
>>
>> Suggestions?
>>
>> My line of code:
>> Debug.Print "Row = " + str(c.GetAttrib(BlockList.Sample))
>>
>> And:
>> If (c.GetAttrib(BlockList.Sample) = Lot1) Then
>>     Lot1CE = CEValue
>> End If
>> If (c.GetAttrib(BlockList.Sample) = Lot2) Then
>>     Lot2CE = CEValue
>> End If
>>
>> Thanks,
>> Greg


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