func Fatalf(format string, args ...interface{}) {
	if Logger != nil {
		Logger.Fatalf(format, args...)
	} else {
		os.Exit(1)
	}
}
// Fatalf calls Fatalf with the Logger registered using RegisterLogger.
// If no logger has been registered, then this function is a no-op.
Fatalf calls Fatalf with the Logger registered using RegisterLogger.
If no logger has been registered, then this function is a no-op.
// Fatalf calls Fatalf with the Logger registered using RegisterLogger . // If no logger has been registered then this function is a no - op .
func Fatalf(format string, args ...interface{}) {
	if Logger != nil {
		Logger.Fatalf(format, args...)
	} else {
		os.Exit(1)
	}
}
func Fatalf ( format string , args ... interface { } ) { if Logger != nil { Logger . Fatalf ( format , args ... ) } else { os . Exit ( 1 ) } }
Fatalf calls Fatalf with the Logger registered using RegisterLogger.
Fatalf calls Fatalf with the Logger registered using RegisterLogger .