package main import ( "fmt" ) type MyError struct { Code uint32 Message string } func NewMyError(code uint32, msg string) error { return &MyError{ Code: code, Message: msg, } } // GetCode 获取错误码 func (e *MyError) GetCode() uint32 { return e.Code } // GetMessage 获取错...
typeSelfError struct{Code int Err error}func(this *SelfError)Error()string{returnthis.Err.Error()}func(this *SelfError)GetCode()int{returnthis.Code}func OpenFile(name string)error{err :=os.Rename("/tmp/test","/tmp/test1")iferr !=nil{return&SelfError{-1001, err}}returnnil}func main(...
type areaError struct { err string radius float64 } 上面的struct类型有一个字段半径,它存储了为错误负责的半径的值,并且错误字段存储了实际的错误消息。 2、实现error 接口 func (e *areaError) Error() string { return fmt.Sprintf("radius %0.2f: %s", e.radius, e.err) } 在上面的代码片段中...
AI代码解释 1// 请求失败造成 panic2funcmain(){3resp,err:=http.Get("https://api.ipify.org?format=json")4defer resp.Body.Close()// resp 可能为 nil,不能读取 Body5iferr!=nil{6fmt.Println(err)7return8}910body,err:=ioutil.ReadAll(resp.Body)11checkError(err)1213fmt.Println(string(body)...
// errorString is a trivial implementation of error. type errorString struct { s string } func (e *errorString) Error() string { return e.s } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 其实是返回了一个errorString的结构体,这个结构体实现了Error()方法,所以实现了error interface...
packagemainimport("time""<your_project>/ent""entgo.io/ent/dialect/sql")funcOpen()(*ent.Client,error) { drv, err := sql.Open("mysql","<mysql-dsn>")iferr !=nil{returnnil, err }// Get the underlying sql.DB object of the driver.db := drv.DB() ...
fmt.Println("open file error", err) return } //r: pair<type: , value:> var r io.Reader //r: pair<type:*os.File, value:"/dev/tty"文件描述符> r = tty //w: pair<type: , value:> var w io.Writer //w: pair<type:*os.File, value:"/dev/tty"文件描述符> ...
typeRdpReqstruct{requestedProtocolsuint32cookie[]byte}funcNewReq(protocoluint32,cookie[]byte)*RdpReq{return&RdpReq{requestedProtocols:protocol,cookie:cookie}}func(r*RdpReq)Serialize()[]byte{buff:=&bytes.Buffer{}// cookieifr.cookie!=nil{cookie:=[]byte(fmt.Sprintf("Cookie: mstshash=%s\r\n",r...
Compile Error: /tmp/sandbox706333626/main.go:5: no new variables on left side of := Works: packagemainfuncmain(){ one :=0one, two :=1,2one,two = two,one } 偶然的变量隐藏Accidental Variable Shadowing 短式变量声明的语法如此的方便(尤其对于那些使用过动态语言的开发者而言),很容易让人把它当...
https://github.com/getlantern/systray https://github.com/hbollon/go-edlib https://github.com/hunterhug/rlock https://github.com/akitasoftware/akita-cli https://github.com/hunterhug/marmot https://github.com/thoas/go-funk https://github.com/mjibson/esc https://github.com/gosnmp/gosnmp ht...