Simple go logger, such as log4j, too simple to use.
fork from github.com/cuixin/log4g
１）根据日志等级，产生不同的日志文件夹 ２）日志文件按小时划分，方便查找
go get github.com/kevin1sMe/log4g
Add main entry to start log4g, specify the output file or not(No output set the nil argument, just only print to console)
import "github.com/kevin1sMe/log4g"
import "time"
func main() {
log4g.InitLogger(log4g.LDebug, ".")
defer log4g.Close()
// begin to output
log4g.Info("hello world")
time.Sleep(time.Second * 1)
}
test 1000k lines to print:
$>go run examples/test.go
$>tail -f logging.log
or directly test the speed of writing bytes.
```
$>nohup go run examples/test.go >/dev/null 2>&1
$>tail -f logging.log
```