valueDiff for arrays?

[Jerry Jensen]

> On Aug 7, 2018, at 8:35 PM, Mark Wieder via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> On 08/07/2018 07:57 PM, Dick Kriesel via use-livecode wrote:
>> On Aug 7, 2018, at 5:47 PM, Alex Tweedly via use-livecode <use-livecode at lists.runrev.com> wrote:
>>> 
>>> Is there an easy way to test whether an array is (currently) a sequence array ?
>>> 
>>> something easier than
>>>     put the extents of tArray into tmp
>>>     if item 1 of tmp = 1 AND item 2 of tmp = the number of elements in tArray then
>> slightly easier, at least:
>> function isSequence p
>>     return the extents of p is 1, number of elements in p
>> end isSequence
> 
> If I'm understanding things right there's more to it:
> The keys all have to be integers and (I think) only those integers from 1 to (the number of keys).

That was my understanding as well.
.Jerry