Re: [Boost-users] [multi_index] function to force to recreate indexes?

From: Joaquín Mª López Muñoz (joaquin_at_[hidden])
Date: 2007-02-23 04:03:08

Boris ha escrito:

> On Thu, 22 Feb 2007 09:25:24 +0200, Joaquín Mª López Muñoz
> <joaquin_at_[hidden]> wrote:
>
> > [...]The subject is a little tricky as it deals with safety in practical
> > and theoretical terms, so if anything's still not clear enough please
> > do not hesitate to come back to me.
>
> I see. To put it in my own words: Any direct modification of items in a
> multi_index_container results in undefined behavior as there is no way for
> the multi_index_container to make sure that the modification is actually
> allowed for the defined indexes. While it might be possible for a
> developer to make sure himself that a modification is allowed there can
> never be a guarantee by the specification of multi_index_container as the
> question if it's really allowed depends on the implementation of
> multi_index_container. Is this correct now? :)
>

Almost :) You can do modifications if these do not affect the relevant
keys of the element; it is modifications affecting the key(s) that are
banned.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo