func ExampleLogger_SwitchFile() {
// Initialize logger with file.
var err error
var f *os.File
if f, err = os.Open("sys.log"); err != nil {
return
}
ol.Switch(f)
// When need to reap log file,
// user must close current log file.
ol.Close()
// User can move the sys.log away.
// Then reopen the log file and notify logger to use it.
if f, err = os.Open("sys.log"); err != nil {
return
}
// All logs between close and switch are dropped.
ol.Switch(f)
// Always close it.
defer ol.Close()
}
func ExampleLogger_ToFile() {
// Open logger file and change the tank for logger.
var err error
var f *os.File
if f, err = os.Open("sys.log"); err != nil {
return
}
ol.Switch(f)
// Use logger, which will write to file.
ol.T(nil, "The log text.")
// Close logger file when your application quit.
defer ol.Close()
}