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Re: global singleton object ? [message #26916 is a reply to message #26902]

Tue, 02 October 2001 08:55

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

R.G.S. (rgs1967@hotmail.com) writes:

> partly inspired by the recent threads on global variables,
> I have a question regarding a global object.
>
>
> I have an IDL process that will run independently on several
> different computers. So, I need a method of deciding what
> computer and operating system I'm on, and defining various
> filepaths etc. So I have written an object with methods such
> as "->getfilepath". This method determines the computer name, and
> returns the appropriate info. There are several methods, for different
> read and write paths, and different data sets. The actual information is
> hardcoded into the object definition.
>
> So, I currently create the object and kill the object deep in each
> basic read/write function, but I would much rather have one instance
> of the object (i.e. the singleton object) that can be seen everywhere.
> (I've used this approach many times in labview, and it is really handy).
> I actually thought that objects were supposed to be of that scope, but
> I guess I got confused with the Labview nonreentrant vis.
>
> So, is there a way to easily define the object, or do I simply create it
> upon startup of my IDL and define it to a system variable?

Oh, oh. Pavel, where are you?

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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[Message index]

		Re: global singleton object ? By: R.G.S. on Wed, 03 October 2001 09:59
		Re: global singleton object ? By: Pavel A. Romashkin on Wed, 03 October 2001 08:22
		Re: global singleton object ? By: R.G.S. on Wed, 03 October 2001 06:11
		Re: global singleton object ? By: Mark Hadfield on Tue, 02 October 2001 14:47
		Re: global singleton object ? By: David Fanning on Tue, 02 October 2001 08:55
		Re: global singleton object ? By: Craig Markwardt on Wed, 03 October 2001 12:27
		Re: global singleton object ? By: Pavel A. Romashkin on Wed, 03 October 2001 10:36

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