Q on Accessing multi-dimension arrays.

Dick Kriesel dick.kriesel at mail.com
Thu Apr 26 17:53:36 EDT 2018


> On Apr 26, 2018, at 12:14 PM, Brian Milby via use-livecode <use-livecode at lists.runrev.com <mailto:use-livecode at lists.runrev.com>> wrote:
> 
> tPath can also be thought of as a (proper) list which makes a little more
> sense. Mark W would need to answer the why.

The following excerpts provide a quote from Mark W:

> On Mar 12, 2012, at 10:19 AM, Pete wrote:
> 
>> I'm wondering how you found about about this key values array feature?  I
>> can't find any mention of it in the dictionary or the reference manual and
>> it sure seems like something that should be known!
> 


> On Mar 12, 2012, at 1:18 PM, Dick Kriesel <dick.kriesel at mail.com <mailto:dick.kriesel at mail.com>> wrote:
> 
> I found it while looking through bug reports for arrays, in <http://quality.runrev.com/show_bug.cgi?id=7166 <http://quality.runrev.com/show_bug.cgi?id=7166>> dated 2008-11-28.  So, thanks be to Mark Waddingham and David Bovill for that.
> 
> For convenience, here's Mark's reply to David:
> 
> Thanks for the suggestion.
> 
> This is on the list to include for the next version. In that version with:
>  put tValue into tArray[tKey]
> (indeed anywhere you can currently do tArray[tKey])
> 
> The meaning of 'tKey' will be extended:
>  1) If it is a string then it is as it is now
>  2) If it is a numerically keyed array starting at 1, then it will mean:
>       put tValue into tArray[tKey[1]][tKey[2]]...[tKey[n]]
>     where <n> is the number of elements in tKey
>  3) Otherwise it is an error.
> 
> This will allow you to construct an array containing the path to the key you
> want to modify/fetch/delete dynamically.
> 
> I agree, the feature's worth adding into the dictionary and manual.
> 
> -- Dick






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