[boost] Generating unique identifiers at compile-time

From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2007-12-02 13:04:25

Meta-Programming, as used in Boost.MPL and others, allows to compute 
arbitrary values at compile-time, in a Turing-complete manner.

However, something like generating unique identifiers at compile-time, 
which would be fairly useful, requires some kind of entropy source to 
create a random seed.

One can maybe extract some entropy from macros such as __DATE__ and 
__TIME__, using both preprocessing and templates.

Among you boosters, which are well known for your interesting in 
meta-programming, is there someone who ever tried to look into this?