[script optimization challenge] Multi dimensional array filtering

[Andre Garzia]

Malte,
I don't know if there would be any improvement in what I am telling you but
what if you combined the array, filtered the lines and split up again?

Andre

On Wed, Aug 5, 2009 at 2:16 PM, Malte Brill <revolution at derbrill.de> wrote:

> Hey all,
>
> I just try to implement a life search on a datagrid. I was doing this with
> the dgtext property. However this turns out to be too slow on elder machines
> if there are many records (30k +) Now I am trying to instead of setting the
> dgtext, to work with the dgdata. This could speed up the whole process quite
> a lot, as the data would not need to be turned into an array again by the
> data grid. Problem: arrays can not be filtered. So what I would like to do
> is find the quickest script that simulates array filtering in n dimensions
> if at any rate possible. My clumsy first try looks like this. This only
> "filters" the second level yet, so turning this into a function for n-levels
> deep would be ideal. :)
>
> on mouseUp
>   local testarray,tprocess,test
>   repeat with i=1 to 30000
>      put any item of "meier,müller,john,doe" into testarray[i]["name"]
>   end repeat
>   answer the number of lines of the keys of testarray
>   put the millisecs into test
>   put the keys of testarray into tprocess
>   repeat for each line theLine in tprocess
>      if testarray[theline]["name"]="john" then
>         delete variable testarray[theline]
>      end if
>   end repeat
>   answer the number of lines of the keys of testarray&cr&the millisecs-test
> end mouseUp
>
> This runs in 31 ms on my machine (Intel MacBook first gen, 2.16 GHz). I
> would like to have this quicker if possible. Also I´d like the runtime on
> your machines, especially Macs pre Intel era.
>
> Any thoughts highly appreciated.
>
> All the best,
>
> Malte_______________________________________________
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