// Package declarationpackagemain// Importing packagesimport("fmt""time""math""math/rand")funcmain(){// Finding the Max of two numbersfmt.Println(math.Max(73.15,92.46))// Calculate the square root of a numberfmt.Println(math.Sqrt(225))// Printing the value of `𝜋`fmt.Println(math.Pi...
package main import "github.com/jinzhu/gorm" import _ "github.com/jinzhu/gorm/dialects/mysql"//导入连接MySQL数据库的驱动包 //DSN const DSN = "root:123456@tcp(localhost:3306)/test?charset=utf8&parseTime=True&loc=Local" //指定驱动 const DRIVER = "mysql" var db *gorm.DB func init() {...
packagemainimport("fmt")// Address 地址结构体typeAddressstruct{ ProvincestringCitystringCreateTimestring}// Email 邮箱结构体typeEmailstruct{ AccountstringCreateTimestring}// User 用户结构体typeUserstruct{ NamestringGenderstringAddress Email }funcmain(){varu1 User u1.Name ="Jason Yin"u1.Gender ="男...
packagedemoimport("database/sql")varmydb,_=sql.Open("mysql","connection_string") 不过我们的业务场景比较特殊,系统中有很多个数据库,要根据不同参数去连不同数据库,那么上面这种声明赋值方式就不行了,我稍加改进,结合map实现了连接池动态管理: 代码语言:go AI代码解释 varenvdbMapmap[string]*sql.DBfunc...
package main import ( "log" "net/http" _ "net/http/pprof" ) func main() { go func() { // 你的业务代码 }() http.ListenAndServe("0.0.0.0:7001", nil) } 如果还是搞不定啊,那我建议就是摇人啦,拉个会议室,点几杯奶茶,叫上几个大佬一起review一下。 Reference Linux top命令详解 - ...
其中,import"C"之后代表开启cgo,在代码中可以使用C.XXX调用C的方法。当需要引入C的其他库例如stdio等,则需要在import "C"前边使用注释的方式写include。 cgo中实现c方法 这里可以不仅写include,也可以直接声明方法,例如 package main /* #include <stdio.h> #include <stdlib.h> int who(char *number) { /...
packagemainimport("fmt""io""net""time""github.com/aceld/zinx/znet")/*模拟客户端*/funcmain() {fmt.Println("Client Test ... start")//3秒之后发起测试请求,给服务端开启服务的机会time.Sleep(3*time.Second)conn,err:=net.Dial("tcp","127.0.0.1:7777")iferr!=nil{fmt.Println("client start...
go build github.com/user/a/a.go // or whatever be your GOPATH for executables to create a binary file下面是linux系统中二进制文件的情况。文件 Bpackage bimport ( "fmt" "os/exec") func main(){ // come out of package b and then go inside package a to run the executable file as ...
packagemainimport("github.com/aliyun-sls/opentelemetry-go-provider-sls/provider")funcmain(){ slsConfig, err := provider.NewConfig(provider.WithServiceName("${service}"), provider.WithServiceNamespace("${service.namespace}"), provider.WithServiceVersion("${version}"), ...
Create and copy the step definitions below into a new file by runningvim godogs_test.go: packagemainimport"github.com/cucumber/godog"funciEat(arg1int)error{returngodog.ErrPending}functhereAreGodogs(arg1int)error{returngodog.ErrPending}functhereShouldBeRemaining(arg1int)error{returngodog.ErrPending...