Newsgroup: comp.lang.c++
Subject: preprocessor check if empty
From: Philipp Kraus <philipp.kraus@...>
Date: Sat, 21 Sep 2013 23:54:06 +0200
Hello,
I hope my question is not off-topic.
My problem is defined as
#define DOSOME(x, รข??) docppcall(x % __VA_ARGS__)
but if __VA_ARGS__ is empty the replace should be docppcall(x), without
the % char. The % char should be only set, if exists an argument.
How can I create a working solution?
Thanks
Phil
Subject: preprocessor check if empty
From: Philipp Kraus <philipp.kraus@...>
Date: Sat, 21 Sep 2013 23:54:06 +0200
Hello,
I hope my question is not off-topic.
My problem is defined as
#define DOSOME(x, รข??) docppcall(x % __VA_ARGS__)
but if __VA_ARGS__ is empty the replace should be docppcall(x), without
the % char. The % char should be only set, if exists an argument.
How can I create a working solution?
Thanks
Phil
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