U++ forum: Welcome to the forum

Status & Roadmap

Authors & License

Funding Ultimate++

Search on this site

Search in forums

Home » Developing U++ » U++ Developers corner » Core chat... (reference counted pointers etc.)

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Return to the default flat view

Create a new topic

Submit Reply

Re: Core chat... [message #12371 is a reply to message #12367]

Fri, 26 October 2007 18:47

mdelfede is currently offline

mdelfede
Messages: 1308
Registered: September 2007

Ultimate Contributor

luzr wrote on Fri, 26 October 2007 14:01

But does not compile Smile

Smile

Your template needs deep public copy constructor for T, even if it is not actually used (because reference count is always 1 for COW ops).

Quote:

and I can tell you that if you forget the & you have double controls on screen!

Smile

Sounds like a possible solution, but in that case you need to solve the quite complex problem of polymorphic copy - and all that only to make flawed code working somehow.

Well, thinking a bit more about it.... I have the solution : put dummy copy constructors in Ctrl class, that throw an exception or fail an assert... So :
1- You're sure that you don't use the copy-on-write for classes you don't want to.
2- You must not write some cumbersome polymorphic class copy constructor.
Copy constructors *are* there, so my previous example does work Very Happy

Very Happy

So, the solution (with refcounted classes) is to displace the error from picked array to copy constructor Very Happy

Very Happy

Report message to a moderator

Send a private message to this user

[Message index]

		Core chat... (reference counted pointers etc.) By: mirek on Tue, 23 October 2007 23:48
		Re: Core chat... By: cbpporter on Wed, 24 October 2007 15:30
		Re: Core chat... By: mirek on Wed, 24 October 2007 16:37
		Re: Core chat... By: cbpporter on Wed, 24 October 2007 16:44
		Re: Core chat... By: mdelfede on Wed, 24 October 2007 17:46
		Re: Core chat... By: mirek on Wed, 24 October 2007 18:23
		Re: Core chat... By: mdelfede on Wed, 24 October 2007 20:24
		Re: Core chat... By: mirek on Wed, 24 October 2007 22:05
		Re: Core chat... By: mdelfede on Wed, 24 October 2007 23:36
		Re: Core chat... By: mirek on Thu, 25 October 2007 05:33
		Re: Core chat... By: mdelfede on Thu, 25 October 2007 14:06
		Re: Core chat... By: mirek on Thu, 25 October 2007 14:34
		Re: Core chat... By: mdelfede on Thu, 25 October 2007 15:19
		Re: Core chat... By: mirek on Thu, 25 October 2007 18:02
		Re: Core chat... By: mdelfede on Thu, 25 October 2007 19:52
		Re: Core chat... By: mirek on Thu, 25 October 2007 21:33
		Re: Core chat... By: mdelfede on Thu, 25 October 2007 23:26
		Re: Core chat... By: mirek on Thu, 25 October 2007 23:38
		Re: Core chat... By: mdelfede on Thu, 25 October 2007 23:47
		Re: Core chat... By: mirek on Fri, 26 October 2007 09:36
		Re: Core chat... By: mdelfede on Fri, 26 October 2007 12:13
		Re: Core chat... By: mirek on Fri, 26 October 2007 12:42
		Re: Core chat... By: mdelfede on Fri, 26 October 2007 13:03
		Re: Core chat... By: mirek on Fri, 26 October 2007 14:01
		Re: Core chat... By: mdelfede on Fri, 26 October 2007 14:18
		Re: Core chat... By: mirek on Fri, 26 October 2007 22:09
		Re: Core chat... By: mdelfede on Fri, 26 October 2007 23:13
		Re: Core chat... By: mirek on Fri, 26 October 2007 23:51
		Re: Core chat... By: mdelfede on Fri, 26 October 2007 18:47
		Re: Core chat... By: mirek on Fri, 26 October 2007 22:12
		Re: Core chat... By: mdelfede on Fri, 26 October 2007 23:09
		Re: Core chat... By: mirek on Fri, 26 October 2007 23:55
		Re: Core chat... By: mdelfede on Sat, 27 October 2007 11:08
		Re: Core chat... By: mirek on Sat, 27 October 2007 11:16
		Re: Core chat... By: mdelfede on Sat, 27 October 2007 13:06
		Re: Core chat... By: mirek on Sat, 27 October 2007 14:50
		Re: Core chat... By: mdelfede on Sat, 27 October 2007 15:21
		Re: Core chat... By: mirek on Sat, 27 October 2007 16:02
		Re: Core chat... By: mdelfede on Sat, 27 October 2007 16:28
		Re: Core chat... By: sergei on Wed, 24 October 2007 19:49
		Re: Core chat... By: mdelfede on Wed, 24 October 2007 20:06
		Re: Core chat... By: mirek on Wed, 24 October 2007 21:46

Previous Topic:	ValueMap
Next Topic:	Quick and dirty solution to .icpp problem...

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

PDF

]

Current Time: Sat May 10 10:01:06 CEST 2025

Total time taken to generate the page: 0.01899 seconds