valueDiff for arrays?

[Mark Wieder]

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).

-- 
  Mark Wieder
  ahsoftware at gmail.com