Looping though a numerically indexed array

[Dan Friedman]

David,

Maybe there are better ways, but here's what I always do when I have an array with numbered keys...

put the keys of pArray into aKeys
sort lines of aKeys numeric
repeat for each line k in aKeys
   //do something with pArray[k]
end repeat

Hope that helps.   :)

-Dan
 

On 9/10/20, 2:39 PM, "use-livecode on behalf of David Bovill via use-livecode" <use-livecode-bounces at lists.runrev.com on behalf of use-livecode at lists.runrev.com> wrote:

    Ah that explains it. The extents works but I seem to remember for each is considerably faster
    On 2 Sep 2020, 16:29 +0100, Brian Milby via use-livecode <use-livecode at lists.runrev.com>, wrote:
    > As long as the array is indexed starting at 1 with no gaps it should work by looping for each element. I just did a quick test to confirm. I built a 100 element array and it looped in order. I deleted 2 keys and then it didn’t. I then added those 2 missing keys back and it worked again.
    >
    > Sent from my iPhone
    >
    > > On Sep 2, 2020, at 10:55 AM, David Bovill via use-livecode <use-livecode at lists.runrev.com> wrote:
    > >
    > > I’m pretty sure there must be a way to efficiently loop through numerically indexed arrays
    > >
    > > Repeat for each key and repeat for each element does not seem to sort the keys in numeric order,. Of course I can get the keys and sort them before repeating - but is there a more efficient way?
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