Arrays and Custom Props
slylabs13 at mac.com
Sat Feb 14 15:27:33 CST 2009
I suppose where I was getting confused is that Applescript apps
properties are persistent. I just assumed rev apps pulled the same
kind of trick.
Calvary Chapel CM
Sent from iPhone
On Feb 14, 2009, at 8:45, Jim Ault <JimAultWins at yahoo.com> wrote:
> I think people get a little confused when they think of Hypercard
> and how it
> always saved changes to the hard drive as they occurred. The key is
> Hypercard stacks are like spreadsheets or word processing documents
> in that
> you needed the app Hypercard installed on your Mac, and it was
> free. Most
> of the time it was already installed on the Mac when purchased.
> There was
> the issue of multiple versions through the years.
> Basically a Rev app could work the same way as the Hypercard app.
> On launch
> you would give the user a choice of opening an existing 'document'
> or stack
> or create a new one. A spreadsheet .xls file is just a bunch of
> gobbledy-gook and data that requires the correct version of an app
> to use.
> Standalones do the same thing... save lots of data to files on a
> hard drive
> and manage the changes in formatting between versions. "Are you
> sure you
> want to update the format of your document to V188.8.131.52?" "Save as
> Photoshop, Jpeg, Compuserve Gif, Tiff...."
> Your choice could be to do like Hypercard and Filemaker... save to
> after every change so the user never had to make that step, thus
> The app, of course, does not change, just the files in its universe,
> even if
> they are on the network, somewhere out there.
> As far as custom properties, recall that in my first email I
> mentioned that
> you could store a whole stack in a custom prop.. well, this is one
> way you
> could store a "New Stack" that opens for the user, just like Excel
> or Word,
> or a "New card" that was not already in the user stack, or a "New
> etc, etc. This way, a new stack does not have to have all of the
> parts that
> the app does, and those are only installed when needed from the
> mother ship.
> I have not looked, but there are probably some videos and help files
> bundling 'resources' with a standalone since so many Rev apps have
> created and distributed by pros on this list. My apps are simple,
> functional, and go to private clients so I am not well-versed in wide
> Hope this makes your weekend a bit calmer. Think about it as
> traveling the
> oceans as millions of others do.. in a boat on the surface. Very
> few people
> ever use a submarine. Revolution builds boats.
> Jim Ault
> Las Vegas
> On 2/13/09 4:42 PM, "Richard Gaskin" <ambassador at fourthworld.com>
>> Bob Sneidar wrote:
>>> WHOA THERE TONTO! I thought the whole idea to properties was
>>> persistence?? That means that I cannot save, for instance, the
>>> database settings a user entered? I have to create an external file
>>> for all of that? And so many card and object properties in my app
>>> DEPEND on persistence through runtime. This means that I have to
>>> put a
>>> kabosh on the whole project!
>> You're no worse off than any other application developer: Windows
>> Linux have never allowed applications to modify themselves at
>> and even Mac OS only allowed this back when it still put executable
>> in the resource fork (though under OS X any app can store files in
>> This article at revJournal may be helpful:
>> Saving data in Revolution standalones
>> by Sarah Reichelt
>> Richard Gaskin
>> Fourth World
>> Revolution training and consulting: http://www.fourthworld.com
>> Webzine for Rev developers: http://www.revjournal.com
>> use-revolution mailing list
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