29 namespace Clustering {
36 std::ostream&
logger(std::ostream& s);
38 std::ostream&
debug();
bool verbose
global flag: use verbose output?
std::ostream devnull
fake-stream used as output if nothing should be printed to stdout/stderr.
std::ostream & logger(std::ostream &s)
std::ostream & debug()
print formatted debug output to std::cerr.