Manipulating parts of a multi-dimensional array

[dunbarx at aol.com]

I think what Jacque wanted was a more direct way to get the elements at any level of a multi-dimensional array. She certainly knows that, given:





on mouseUp
   put "X" into myArray[a][b][c]
   put "Y" into myArray[a][b][d]
   put myArray[a][b] into newArray
end mouseUp


newArray gives:


c   X
d   Y


and that one can loop through whatever level of the array is of interest (the third in this case) to finally find:


X
Y


A function can be written, as Jacque mentioned, to find this sort of thing with the desired level described as a parameter. I just thought that it would be useful to have that very thing:


put elementsOrArray(theArray,theElement) into newArray


as a native function.


Craig



-----Original Message-----
From: Jacques Hausser <jacques.hausser at unil.ch>
To: How to use LiveCode <use-livecode at lists.runrev.com>
Sent: Sun, Jun 16, 2013 6:40 pm
Subject: Re: Manipulating parts of a multi-dimensional array


I'm not sure to understand your question correctly.

if your array has four "first level" elements: myArray["a"]    myArray["b"]    
myArray["c"]    myArray["d"] 
and that e.g. myArray["c"] has three "second level" elements myArray["c"]["x"]    
myArray["c"]["y"]    myArray["c"]["z"]
which in turn contain several "third level" elements, e.g. myArray["c"]["y"][1]   
myArray["c"]["y"][2]   myArray["c"]["y"][3]

you can perfectly well <   put myArray["c"]["y"] into NewArray   > , which will 
have elements NewArray[1]  NewArray [2]   NewArray[3]

NewArray[2] and myArray["c"]["y"][2] will have the same content. And after 
changing these contents (you can even replace them by other arrays) you can do 
the reverse

put newArray into myArray["c"]["y"]

oh, I didn't see that you got answers already - Colin's says the same thing more 
concisely - well I send this one nevertheless. To answer your question rather 
than to read your answer is such an exceptional situation I'll not miss it ;-)

Jacques



Le 16 juin 2013 à 21:26, J. Landman Gay <jacque at hyperactivesw.com> a écrit :

> I have a big array with lots of dimensions. Sometimes I need to work with a 
"sub-dimension" only. For example:
> 
> array[a][b][c][d]
> 
> Each of those elements contains many other elements:
> 
> [c][x][y][z]
> 
> 
> which each contain more elements:
> 
> [c][x][1][2][3]
> 
> Suppose I only want to work with [c][x] and all its sub-dimensions. Is there 
an efficient way to extract that into its own array without looping through all 
the [c] keys?
> 
> -- 
> Jacqueline Landman Gay         |     jacque at hyperactivesw.com
> HyperActive Software           |     http://www.hyperactivesw.com
> 
> _______________________________________________
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University of Lausanne
CH 1015 Lausanne
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