[boost] [system] system-0.2 request for comments

At 12:10 PM -0400 7/22/06, Beman Dawes wrote:

* Addition of a header boost/identifier.hpp. For years I've used a similar class to provide the type safety and freedom from unwanted conversions that is missing when a simple int is used for an identifier. This is logically separate from the system stuff, but for convenience is included in the system package since error_code.hpp uses it.

This appears to be very similar in intent to the facility provided by boost/strong_typedef.hpp, though there are significant differences in detail.