stringstream temporary ostream return problem

Question

I\'m creating a logger with the following sections:

// #define LOG(x) // for release mode
#define LOG(x) log(x)

log(const string& str);
log(const ostrea         


        

Answer 1

Alter your LOG() macro to this:

#define LOG(x) do { std::stringstream s; s << x; log(s.str()); } while(0)

That will let you use the following syntax in your debugging logs, so you don't have to manually construct the string stream.

LOG("Testing" << 1 << "two" << 3);

Then define it to nothing for release, and you'll have no extra allocations.