Should log file streams be opened/closed on each write or kept open during a desktop application's lifetime?

Question

Should log classes open/close a log file stream on each write to the log file or should it keep the log file stream open throughout the application\'s lifetime until all log

Answer 1

As a user of your application I'd prefer it to not hold files open unless it's a real requirement of the app. Just one more thing that can go wrong in the event of a system crash, etc.