From: Arkadiy Vertleyb (vertleyb_at_[hidden])
Date: 2004-07-22 10:01:51
"David Abrahams" <dave_at_[hidden]> wrote
> "Arkadiy Vertleyb" <vertleyb_at_[hidden]> writes:
> > - Whenever the user needs to register her own classes, she provides
> > identifiers by any means she prefers, such as enum, etc., starting from
> > BOOST_TYPEOF_USER_GROUP.
> How will multiple independent users, or libraries that use boost,
> avoid collisions?
If the class is registered in a header, it should be registered against a
symbol somehow produced from the name of this header (in the similar way to
include guards). If the author of such classes wants to be independent, she
supplies a separate header, where her symbols are enumerated, looking
MY_SYMBOL_1 = BOOST_TYPEOF_LAST,
#define BOOST_TYPEOF_LAST MY_SYMBOL_LAST
ultimately, at some point, somebody is writing a CPP file. This end user
has to collect all such headers, and "chain" them in a single header, thus
emulating a single enum.
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