Preprocessor

ROOT
1

Hi all,

I am very lazy and often use macros of the following kind:

#define PRINTV(V) { std::cout << #V<<"="<<V << std::endl; }

Unfortunately CINT doesn’t seem to recognise the ‘#’ modifier. Am I doing something wrong, or is this not implemented?

Cheers, Rolf

2

Hello Rolf,

Cint has limitation in handling macros like that. (SEE doc/limitati.txt,
preprocessor statements, in cint source package.)

#define PRINTV(V) { std::cout << #V<<"="<<V << std::endl; }

Please use template instead.

template void PRINTV(T& V) { std::cout << #V<<"="<<V << std::endl; }

Thank you
Masa Goto