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Re: Destroying objects [message #82757 is a reply to message #37981]

Fri, 18 January 2013 09:50

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Helder writes:

> as usual I'm do things wrong believing I'm not until I wake-up.
> So here's the thing. I'm using a structure to describe some objects. In my case these are regions of interest. Within this structure I have real objects. So that my structure looks something like this:
>
> MyStruct = {ROI_Structure, a:ID_Nr, b:SomeOtherParameter, c:Obj_new()}
> I then fill in MyStruct.c by doing something like this:
> XROI, MyImage, REGIONS_OUT = XROI_ObjRef
> MyStruct.c = XROI_ObjRef
>
> The thing is that I then replicate this structure when I add new ROIs.
> So I end up with say 10 {ROI_Structure} where for each element I did something like this:
> for i=0,9 do MyStruct[i].c = XROI_ObjRef[i]
>
> If and when somewhere later in the program I want to delete object number 5... do I have to take care of using
> Obj_destroy, MyStruct[5].c
>
> Is there no alternative?
> Thing is, in this structure I have many pointers and objects...
>
> I'm I wrong in saying that I have to do the good-boy bookkeeping and free/destroy for each deleted structure element all pointers and objects?

I'm not sure what the problem is, Helder. Doesn't this, do the job:

Obj_Destroy, myStruct.c[*]

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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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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