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Re: Proposed change to U++ to allow owning children. [message #31595 is a reply to message #31593]

Wed, 16 March 2011 18:29

Lance is currently offline

Lance
Messages: 527
Registered: March 2007

Contributor

That's why I praise the design and implementation of U++.

Even though I don't know U++ really well, I can be pretty much sure my solution works or will work with minor refinement.

It can be proved by reasoning:

1. Every child of a Ctrl is itself a Ctrl2. However deep the derivation chain, the virtual destructor of Ctrl will alway be called and there will be only one version of the destructor which I touched.
3. In the destructor of Ctrl, it repeatedly remove each of its children by calling RemoveChild;
4. U++ design guaranteed each Ctrl will have but 1 or 0 parent.
So however ownership is changed during a Ctrl's life time, it will have 1 parent if it was ever assigned a parent. When its parent is destructed, and its owned flag is set to true, it's guaranteed to be destruct by our implementation of RemoveChild family functions.

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[Message index]

		Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 17:18
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Wed, 16 March 2011 17:26
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 17:29
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 17:30
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 17:39
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Wed, 16 March 2011 18:01
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 18:10
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 18:29
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 18:35
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 18:43
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 16 March 2011 19:24
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 02:13
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Fri, 18 March 2011 11:01
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 14:39
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 15:21
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 15:40
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 16:22
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 16:34
		Re: Proposed change to U++ to allow owning children. By: mirek on Fri, 18 March 2011 19:35
		Re: Proposed change to U++ to allow owning children. By: mirek on Fri, 18 March 2011 19:32
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 23:02
		Re: Proposed change to U++ to allow owning children. By: mirek on Fri, 18 March 2011 23:18
		Re: Proposed change to U++ to allow owning children. By: Lance on Fri, 18 March 2011 23:34
		Re: Proposed change to U++ to allow owning children. By: mirek on Fri, 18 March 2011 23:40
		Re: Proposed change to U++ to allow owning children. By: Lance on Sat, 19 March 2011 00:02
		Re: Proposed change to U++ to allow owning children. By: mirek on Sat, 19 March 2011 00:37
		Re: Proposed change to U++ to allow owning children. By: Lance on Sat, 19 March 2011 01:30
		Re: Proposed change to U++ to allow owning children. By: Lance on Sat, 19 March 2011 01:35
		Re: Proposed change to U++ to allow owning children. By: mirek on Sat, 19 March 2011 10:59
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Sun, 20 March 2011 10:32
		Re: Proposed change to U++ to allow owning children. By: Lance on Sun, 20 March 2011 14:07
		Re: Proposed change to U++ to allow owning children. By: Lance on Sun, 20 March 2011 14:11
		Re: Proposed change to U++ to allow owning children. By: Lance on Sun, 20 March 2011 14:28
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Fri, 25 March 2011 13:26
		Re: Proposed change to U++ to allow owning children. By: Lance on Sun, 27 March 2011 15:33
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Sun, 17 April 2011 17:25
		Re: Proposed change to U++ to allow owning children. By: Lance on Tue, 19 April 2011 06:00
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Tue, 19 April 2011 09:14
		Re: Proposed change to U++ to allow owning children. By: Lance on Tue, 19 April 2011 14:09
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Tue, 19 April 2011 18:05
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 20 April 2011 02:44
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Wed, 20 April 2011 08:51
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 20 April 2011 19:24
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 20 April 2011 21:17
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 20 April 2011 21:23
		Re: Proposed change to U++ to allow owning children. By: Lance on Wed, 20 April 2011 21:38
		Re: Proposed change to U++ to allow owning children. By: kohait00 on Thu, 28 April 2011 16:32
		revised ownership change By: kohait00 on Thu, 28 April 2011 18:28
		Re: revised ownership change By: Lance on Thu, 28 April 2011 21:45
		Re: revised ownership change By: kohait00 on Thu, 28 April 2011 21:57
		Re: revised ownership change By: Lance on Thu, 28 April 2011 23:18
		Re: revised ownership change By: Lance on Thu, 28 April 2011 23:31
		Re: revised ownership change By: Lance on Thu, 28 April 2011 23:54
		Re: revised ownership change By: kohait00 on Sun, 22 May 2011 21:58
		Re: revised ownership change By: Mindtraveller on Mon, 23 May 2011 00:28
		Re: revised ownership change By: kohait00 on Mon, 23 May 2011 11:16
		Re: revised ownership change By: Lance on Mon, 06 June 2011 05:11
		Re: revised ownership change By: Lance on Mon, 06 June 2011 05:05

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