cpputils

utils for cpp(c++11)

simple log

example

logf("DEBUG", "debug %s,%d", str,num);
log("DEBUG")<<"debug "<<str<<","<<num<<std::endl;

Timer t;
int64_t e = t.Elapsed();

cout<< t.ElapsedStr();

random_generator rg;
size_t rand = rg.next<size_t>(1,5);