Ben Rubinstein wrote:
On 23/11/2012 15:14, Richard Gaskin wrote:
With explicitVars set to true, all scripts in memory during the session
must have been written with that relatively-recent addition to the language
in mind
Well, "relatively-recent" is... relative, I suppose. I'm not sure when
explicitVars was added to to Metatalk - Google shows several mentions of it by
Scott Raney in 1997, including a note that it's "SuperCard compatible" - and
certainly it was in SuperTalk no later than 1994, but I've no idea whether it
was new or whether is was in v1.0 in 1989. So it's true that it might be less
than 20 years old!
Some of us have been doing this a while. Time flies. :)
I tend to think of it as a recent addition because it wasn't until
RunRev altered its use in their IDE that it became useful.
The impact of the explicitVars global property is so great that almost
no one in the SC world used it much, and HyperCard, Toolbook, OMO, Plus,
Gain Momentum, or any of the other xTalks ever bothered with it at all.
With RunRev's more limited use introduced just a few years ago, the
scope of impact is now small enough that it can be a sensible addition
to a programmer's workflow without breaking from the traditional nature
and history of xTalk for every script one might want to use.
--
Richard Gaskin
Fourth World
LiveCode training and consulting: http://www.fourthworld.com
Webzine for LiveCode developers: http://www.LiveCodeJournal.com
Follow me on Twitter: http://twitter.com/FourthWorldSys
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