Choosing between a Null stream and ostringstream

[Naveen Akarapu]

#define LOG(level) \
(level > Log::CurrentLev el() ? NullStream(): Log().Get(level ))

struct NullStream:std: :ostream {
public:
NullStream():st d::ios(0), std::ostream(0) {}
};

Log().Get() returns a ostringstream.

The following statement statement gives the below compiler error:
LOG(3) << "logging" << endl;


error: operands to ?: have different types ‘NullStream’ and ‘std::basic_ost ringstream<char , std::char_trait s<char>, std::allocator< char> >’

How can I rewrite the Macro LOG?


Thanks
Naveen

[weaknessforcats]

What are you trying to do?

The first hint of trouble is that #define. You use those in C a lot but rarely in C++.