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...
AI代码解释 packageutilimport("net""net/http""net/http/httputil""os""runtime/debug""strings""time""github.com/gin-gonic/gin""github.com/natefinch/lumberjack""go.uber.org/zap""go.uber.org/zap/zapcore")type LogConfig struct{Level string`json:"level"`// Level 最低日志等级,DEBUG<INFO<WA...
fmt.Println("删除两头的/ ="+ strings.Trim(str03,"/"))//Users//Documents/GOPatch/src/MyGO/config/TestStringfmt.Println("删除左边的/ ="+ strings.TrimLeft(str03,"/"))//Users//Documents/GOPatch/src/MyGO/config/TestString///还有 TrimRightstr06 := strings.TrimSpace("hello hao hao hao")...
type HTTPResponse struct { Msg string `json:"msg"` Data interface{} `json:"data"` } func response2JSON(ctx context.Context, wr http.ResponseWriter, resp interface{}, err error) string { respData := &HTTPResponse{ Msg: Success, Data: resp, } if err != nil { respData = &HTTPRespon...
2. struct字段的遍历 2.1 简单结构体的遍历 首先定义一个如下的简单结构体,如程序所示,共有三个字段。 typeEmployeestruct{ NamestringRolestringSalaryfloat64} 下面,我们尝试用reflect包对一个Employee类型的值进行遍历,要求输出字段的名称、类型和值。
func(stuStudent)print(){// 方法体} 代码示例: packagemainimport"fmt"funcmain(){// 声明结构体并赋值stu:=Student{"张三",18,"男","大一"}stu.print()}typeStudentstruct{NamestringAgeintGenderstringGradestring}func(stuStudent)print(){fmt.Println("姓名",stu.Name)fmt.Println("年龄",stu.Age)fmt...
a := map[string]int{ "Monday": 1, "Tuesday": 2, }a := { "Monday": 1, "Tuesday": 2, }Mapping literals OnStart(func() { ... })onStart => { ... }Lambda expressions type Rect struct { Width float64 Height float64
int kprobe__sys_open(struct pt_regs *ctx, char __user* pathname, int flags, mode_t mode) { bpf_trace_printk("sys_open called.\\n"); return 0; } """ b = BPF(text=program) b.trace_print() 运行它: $ sudo python hello-open-world-1.py ...
package main import ( "log" "github.com/gofiber/fiber/v3" ) type User struct { Name string `json:"name"` Age int `json:"age"` } func main() { app := fiber.New() // Route that returns a JSON object app.Get("/user", func(c fiber.Ctx) error { return c.JSON(&User{"John...
package main import ( pq "github.com/emirpasic/gods/queues/priorityqueue" "github.com/emirpasic/gods/utils" ) // Element is an entry in the priority queue type Element struct { name string priority int } // Comparator function (sort by element's priority value in descending order) func by...