RE: [boost] boost::nil/ignore

From: Gary Powell (Gary.Powell_at_[hidden])
Date: 2001-06-11 20:34:41

>>
If this sort of construct comes up more often (the "ignore" in tuples, if it

still exists, is another example), perhaps it would be best to have a macro 
that chooses between declaring it in an anonymous namespace (no extra work 
required by the user), declaring it as extern (user links the Boost
libraries 
that contain the instance), or eliminating it entirely (for _really_ small 
amounts of RAM).
<<

Yes "ignore" is in tuples. (Thanks Doug!) so yes, you can add that to the
utility with "nil" as well.

I'm not sure it actually exists at anytime in a tuple. (nil) By the time the
compiler evaluates the code we've stopped using the placeholder for the end.
(Same for ignore.
it directs the compiler to not generate code.)

  -gary-

gary.powell_at_[hidden]