Some people say you can live without a debugger. May be, proper logging and and tests definitely reduce number of times when you need to launch it, but I sometimes find myself using debugger a lot, for example, when developing...

debugging Ruby

If you want to log something then what do you do? If you are writing Rails code the answer is obvious - Rails#logger, but if it is something which could be potentially not a part of Rails application? Is that...

metaprogramming logging Ruby