Suggestion about metamacro_argcount

[stanislaw]

Hello.

Please, consider basing metamacro_argcount on the solution proposed here so it could properly count zero-arguments presence.

I see the next comment there states "This uses a nonstandard GCC extension." but I can't evaluate myself if it is really a no-no for Objective-C world so I decided to write you about this solution to know if it can be included into libextobjc.

Thanks.

[stanislaw]

See also this: http://efesx.com/2010/07/17/variadic-macro-to-count-number-of-arguments/#comment-2214

[jspahrsummers]

I strongly dislike the zero-argument extension. What's the use case for this?

[stanislaw]

Actually, nothing serious.

Just interesting, why strongly? I have it working fine in Xcode - I know it is by no means an argument, but what are really the limitations that are expected from using it?

[jspahrsummers]

Mostly I just think zero-argument macros are kind of a hack, but libextobjc has other such hacks, I suppose.

Perhaps a bigger issue is that metamacros.h actually comes from libextc, which is strictly C99 compliant. This change wouldn't be backportable. :\

[stanislaw]

OK, thanks.