Rene Rivera wrote:
Johan Nilsson wrote:
Hi,
I guess that the subject line isn't even technically correct. What I'd like to do is to implement something like the following:
#define FOO(x) MyNamedParamFn(x, d = 3, e = 4)
Where e.g.
"FOO((a = 0, b = 1));"
would expand to the equivalent of:
MyNamedParamFn(a = 0, b= 1, d = 3, e = 4);
Is this possible?
What others failed to mention is that you can do this *without* macros. For example:
Actually, I need to use macros as the additional parameters actually are "line = __LINE__, file = __FILE__". Nevertheless you helped me work around the problem: #define FOO(x) MyNamedParamFn_with_named_params((x, line = __LINE__, file = __FILE__)) The above makes it work (well, at least it compiles for the time being). However I guess that this approach kind of defeats the purpose of using the BOOST_PARAMETER_(MEM)FUN macros for defining the method ... must think about that. Now if I only could get rid of those ugly double parenthesises in the call to "FOO" - guess I'll just have to wait for preprocessor variadic args support for that ... Thanks! // Johan