Subject: Re: [boost] [variant] awkward recursion
From: Gottlob Frege (gottlobfrege_at_[hidden])
Date: 2012-10-31 12:06:06
On Tue, Oct 30, 2012 at 10:16 PM, Steven Watanabe <watanabesj_at_[hidden]> wrote:
> Not really.
> "no swap() function invalidates any references,
> pointers, or iterators referring to the elements
> of the containers being swapped." (C++11 126.96.36.199)
> I don't know of any way to implement this with the
> small object optimization.
Well, depends what is meant by pointers and references. Actual
pointers and references, or vector<>::pointer_type, etc?
Because, at least for iterators, you could keep a list of outstanding
iterators and update them during swap.
Typically not a good idea, but possible.
Same for pointer/reference if they only need to be pointer-like and
Also, I suppose my vector could have small object optimization until a
pointer/reference was taken. Again, probably not a brilliant plan...
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk