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Re: Destroying objects [message #38117 is a reply to message #38019]

Tue, 17 February 2004 13:19

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

JD Smith writes:

> Interesting method. I would worry that putting an explicit CATCH in
> each method might bog things down, if your events typically make
> deeply nested excursions through dozens of routines (as mine often
> do).

I don't know about speed. Those errors seem to happen instantaneously
to me. :-(

Lord knows I'm not going through "dozens" of routines, typically.
I have enough trouble keeping everything in mind with relatively
flat object hierarchies. Six or eight levels deep is a fairly deep
traceback from most of the programs I write. But it takes next to
no time to go into a routine and back out of it again (which is what
happens, essentially, to a handled message), so I don't notice a
time penalty at all.

> Since I'm not planning to get rich off of it, I don't mind showing you
> my simple method for discriminating between command-line and GUI.

Interesting. My library is built for application building, which
pretty much means widgets from the get-go, so we just assume
a widget is around and pop-up dialogs on errors. If I had it
to do over, though, I might think about abstracting the
widget functionality (this is one thing the iTool library
does nicely, but at a huge cost in complexity) and separating
the object from the widget itself. Or, better yet, just have
RSI marry the widget and object functionality so we don't
have to do it. :-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Destroying objects By: Michael Wallace on Wed, 11 February 2004 14:26
		Re: Destroying objects By: JD Smith on Tue, 17 February 2004 12:30
		Re: Destroying objects By: David Fanning on Tue, 17 February 2004 13:19
		Re: Destroying objects By: David Fanning on Mon, 16 February 2004 14:06
		Re: Destroying objects By: JD Smith on Mon, 16 February 2004 13:11
		Re: Destroying objects By: David Fanning on Mon, 16 February 2004 13:22
		Re: Destroying objects By: Michael Wallace on Mon, 16 February 2004 12:46
		Re: Destroying objects By: JD Smith on Mon, 16 February 2004 11:55
		Re: Destroying objects By: David Fanning on Mon, 16 February 2004 10:18
		Re: Destroying objects By: David Fanning on Fri, 18 January 2013 10:23
		Re: Destroying objects By: Helder Marchetto on Fri, 18 January 2013 10:07
		Re: Destroying objects By: David Fanning on Fri, 18 January 2013 09:50
		Re: Destroying objects By: chris_torrence@NOSPAM on Fri, 18 January 2013 09:12

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