From: Dylan Cuthbert (dylan_at_[hidden])
Date: 2002-06-25 21:37:17
I'd like to be able to assign a macro a new value from within another macro
definition. Actually, come to think about it, the ability to issue
"escaped" # pre-processor cmds from within a macro definition would be
#define frog "my"
#define APPEND_STRING( arg1, append )
\#redefine ###arg1 arg1 append
APPEND_STRING( frog, " dog" )
would (magically) expand to:
#redefine frog "my" " dog"
1. This is very rough and sketchy and I take no account for the order and
timing of macro expansion so don't pick it apart on that basis, its *just*
an outline of a pre-processor feature that I have wanted for mm.. around 10
2. Obviously, there is no "#redefine" but a little bit of shuffling around
with #undefs and a temporary define would do the same thing.
The command #redefine would be rather useful - header files are *littered*
with #undef blah, #define blah's.
Just some outlandish ideas :-)
-- --------------------------------- Q-Games, Dylan Cuthbert. http://www.q-games.com "Paul Mensonides" <pmenso57_at_[hidden]> wrote in message news:001d01c21caf$a6a3ea90$7772e50c_at_c161550a... > > Will any of this kind of stuff ever filter into the stl or standard libs? > > (iso 4?) The whole style of C++ programming would change for the better. > > It would also help people get on with optimizing gcc's compile times if it > > was more in use ;-) > > > > Now, if only there were better meta-programming support in the pre-processor > > :-) the ability to define macros within other macros would do it. Not that > > I like using macros but sometimes they *are* the only solution. > > > > Regards > > What do you need exactly from the preprocessor? > > Paul Mensonides > > _______________________________________________ > Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost >
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