> > There is still a problem: the analogy, that log/logf is similar > to write/writef, is not right anymore. Please correct me if I'm > wrong... but AFAIK write converts every argument to string and > the output device has no mean to choose a preferred > representation of the arguments. > > It will be a surprise if I replace > log(a, b, c); > with > logf("%s%s%s", a, b, c); > and possibly get different results. >
If you are just using default logging, they are the same. Point is that it allows for different results based on logging configuration/implementation. The logf version says the logging output has to be exactly that string, in all instances. The other says here is some things I want logged, and the logging can decide how to output them.