5. Miscellaneous Features

5.1 Version Number

A string containing the version of the library can be obtained by calling the global function ann::version(). This is declared in `ann/ann.h'.

5.2 Logging

To log a string, call the global function ann::log() which returns an std::ostream, and stream the string to it(1).

using namespace ann; int main() { log() << "Start of program" << std::endl; log() << "End of program" << std::endl; return 0; }

By default, anything streamed to the object returned by log() will go to `/dev/null'. This behaviour can be changed however by calling ann::setLogStream or ann::setLogFile. These functions take a std::ostream and a std::string respectively, which refer to the stream or file to which all future logging should be done.

Currently there is no facility for different levels (priorities) of logging.