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Re: Know what you're using. Size of some common types. [message #57997 is a reply to message #57996]

Tue, 11 January 2022 22:25

Lance
Messages: 534
Registered: March 2007

Contributor

The cost is the size of the vtable of Ctrl and each of its derivatives almost doubles. With the number of classes in the hierarchy, this could be quite big to ignore. Then we get something like suggested by you Laughing

class CtrlWithFakeCtrls : public Ctrl
{
...
}

Only Ctrls derived from the class are able to make use of the facility. If any existing Ctrl is believed to be able to benefit from it, we just change its base class.

Now I get your point. It's nice.

[Updated on: Tue, 11 January 2022 22:32]

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[Message index]

		Know what you're using. Size of some common types. By: Lance on Mon, 27 December 2021 19:33
		Re: Know what you're using. Size of some common types. By: Klugier on Mon, 27 December 2021 19:58
		Re: Know what you're using. Size of some common types. By: Lance on Mon, 27 December 2021 20:32
		Re: Know what you're using. Size of some common types. By: Lance on Mon, 27 December 2021 20:37
		Re: Know what you're using. Size of some common types. By: Klugier on Mon, 27 December 2021 21:42
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 28 December 2021 02:29
		Re: Know what you're using. Size of some common types. By: Novo on Tue, 28 December 2021 05:17
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 28 December 2021 20:27
		Re: Know what you're using. Size of some common types. By: Novo on Tue, 28 December 2021 23:49
		Re: Know what you're using. Size of some common types. By: Lance on Wed, 29 December 2021 01:42
		Re: Know what you're using. Size of some common types. By: Lance on Thu, 30 December 2021 02:39
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 31 December 2021 19:51
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 31 December 2021 20:20
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 31 December 2021 20:28
		Re: Know what you're using. Size of some common types. By: mirek on Wed, 05 January 2022 10:47
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 07 January 2022 17:25
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 07 January 2022 17:44
		Re: Know what you're using. Size of some common types. By: mirek on Fri, 07 January 2022 18:34
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 07 January 2022 19:01
		Re: Know what you're using. Size of some common types. By: Lance on Fri, 07 January 2022 19:26
		Re: Know what you're using. Size of some common types. By: mirek on Fri, 07 January 2022 22:22
		Re: Know what you're using. Size of some common types. By: Lance on Sun, 09 January 2022 20:36
		Re: Know what you're using. Size of some common types. By: mirek on Mon, 10 January 2022 01:07
		Re: Know what you're using. Size of some common types. By: Lance on Mon, 10 January 2022 02:00
		Re: Know what you're using. Size of some common types. By: Lance on Mon, 10 January 2022 21:43
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 11 January 2022 02:29
		Re: Know what you're using. Size of some common types. By: mirek on Tue, 11 January 2022 13:41
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 11 January 2022 15:19
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 11 January 2022 17:40
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 11 January 2022 22:07
		Re: Know what you're using. Size of some common types. By: Lance on Tue, 11 January 2022 22:25
		Re: Know what you're using. Size of some common types. By: mirek on Wed, 11 May 2022 09:42
		Re: Know what you're using. Size of some common types. By: Novo on Thu, 12 May 2022 08:26
		Re: Know what you're using. Size of some common types. By: Lance on Sat, 14 May 2022 21:30
		Re: Know what you're using. Size of some common types. By: mirek on Fri, 07 January 2022 18:32

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