Re: iPhoto returns a real number as a photo id
Re: iPhoto returns a real number as a photo id
- Subject: Re: iPhoto returns a real number as a photo id
- From: Tommy Bollman <email@hidden>
- Date: Tue, 15 Jun 2010 13:19:29 +0200
On 15. juni 2010, at 01.50, Shane Stanley wrote:
>
> On 15/6/10 9:21 AM, "Doug McNutt" <email@hidden> wrote:
>
>> It would be a bit difficult to mask off the part of the ID that refers to a
>> photo session or perhaps the date bits. But then Is the format of the ID
>> integer public information in iPhoto?
>
> I don't think so, but I don't really know. And bit-masking isn't directly
> supported in AS anyway; you need to use mod, which will work just as well
> with reals.
>>
>> AppleScript would have considerable difficulty printing out an ID stored that
>> way if there is a desire to match what iPhoto prints.
>
> Either way is coercion to a string.
>
>>> Where are these 62-bit integers you speak of?
>>
>> Surely he's referring to an integer that is two bits shy of 64 the same way 30
>> is two bits shy of 32.
>
> I understand what he means -- I was asking whether they actually exist.
>>
>> But even that's not completely clear in Applescript. which seems to be limited
>> to 2^29 -1 regardless of the size of the integer on the current machine.
>
> Maybe they are 62-bit but limited for backwards compatibility. But the
> reason is irrelevant; what matters is what the limit is.
The 62 bit integers resides in 64 bit AS
Best regards
Tommy Bollman
--------------------------------------------------------------------------------------------------
Mollison's Bureaucracy Hypothesis:
If an idea can survive a bureaucratic review
and be implemented it wasn't worth doing.
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