每个程序员都应该掌握的Golang性能优化秘技 性能分析和优化是所有软件开发人员必备的技能,也是后台大佬们口中津津乐道的话题。 Golang 作为一门“现代化”的语言,原生就包含了强大的性能分析工具pprof 和 trace。pprof 工具常用于分析资源的使用情况,可以采集程序运行时的多种不同类型的数据(例如 CPU 占用、内存消耗...
defer logger.Sync() simpleHttpGet(logger, "www.sogo.com") simpleHttpGet(logger, "http://www.sogo.com") } func simpleHttpGet(logger *zap.Logger, url string) { sugarLogger := logger.Sugar() sugarLogger.Debugf("Trying to hit GET request for %s", url) resp, err := http.Get(url) ...
AI代码解释 // A EventLoop is a network server.type EventLoopinterface{// Serve registers a listener and runs blockingly to provide services, including listening to ports,// accepting connections and processing trans data. When an exception occurs or Shutdown is invoked,// Serve will return an...
fmt.Println("can not convert to int",err)return} fmt.Println("Atoi:",num) }//编译后执行结果如下:[root@NEO project]# go build -o bin/example01_string02 go_dev/day03/example01_string02/main [root@NEO project]# bin/example01_string02 Replace: hello world neo Count:2Repeat: hello wo...
switch n := node.(type) { case *ast.Ident: // support true/false switch strings.To...
func GetCurrentFormatStr(fmtStr string) string { if fmtStr == "" { fmtStr = "2006-01-02 15:04:05" } return time.Now().Format(fmtStr) } 1. 2. 3. 4. 5. 6. 时间戳 to 日期格式 AI检测代码解析 func Sec2TimeStr(sec int64, fmtStr string) string { ...
ctx := req.Context() span := trace.SpanFromContext(ctx) span.AddEvent("say : Hello, I am david", trace.WithAttributes(attribute.KeyValue{ Key:"label-key-1", Value: attribute.StringValue("label-value-1"), })) _, _ = io.WriteString(w,"Hello, I am david!\n") sayDavidCount....
Now that reflect.StringHeader and reflect.SliceHeader are officially deprecated, I think it's time to revisit adding function that satisfy the reason people have used these types. AFAICT, the reason for deprecation is that reflect.SliceH...
程序中具体对象是 cobra.Command{},这个是根命令;子命令(subCmd)用 rootCmd.AddCommand() 添加,子命令通常也会单独存一个文件, 并通过一个全局变量让 rootCmd 可以 add 它。 arguments: 命令行参数,通常是 []string 表示 flags: 命令行选项。对 command 进一步的控制。通常用一短横 - 或者两短横 -- ...
())}func getLogWriter() zapcore.WriteSyncer {//如果想要追加写入可以查看我的博客文件操作那一章file, _ := os.Create("./test.log")return zapcore.AddSync(file)}func simpleHttpGet(url string) {sugarLogger.Debugf("Trying to hit GET request for %s", url)resp, err := http.Get(url)if ...