func ReadFile funcReadFile(filenamestring)([]byte,error) ReadFile reads the file named by filename and returns the contents. A successful call returns err == nil, not err == EOF. Because ReadFile reads the whole
1. 读取整个文件到内存中 使用ioutil 库的ReadFile()可以把整个文件读到内存中,在日常开发中,这是读文件使用频率最多的方法,也是最基本一个函数。下面代码展示了如何使用这个函数。 package main import ( "fmt" "os" ) func main() { data, err := os.ReadFile("./file.txt") if err != nil {fmt...
func (f *File) WriteString(s string) (n int, err error) func (f *File) Seek(offsetint64, whenceint) (retint64, errerror) func Create(namestring) (*File,error) Open()默认的mode为O_RDONLY。 Read reads up to len(b) bytes from the File. It returns the number of bytes read and a...
type FileSystem struct{MetaData[]byte}func(fs*FileSystem)Read(){}func(fs*FileSystem)Write(){}typeNTFSstruct{*FileSystem}// fs 是一个已经初始化了的NTFS实例fs.FileSystem.Read() 要注意,指针的*只是类型修饰符,并不是类型名的一部分,所以对于形如*Type和Type的嵌入类型,我们都只能通过Type这个名字进...
*/ reader := bufio.NewReader(file) //文件若不是换行结尾,就算出错 str, err := reader.ReadString('\n') if err != nil { fmt.Println("read string failed,err:", err) return } fmt.Printf("read str success,result:%s\n", str) } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12...
val_type string valid_value RGB Hex Model# propertyvalue type model permission read val_type string Manufacturer# propertyvalue type manufacturer permission read val_type string Identify# propertyvalue type identify permission read val_type string ...
初始化EventLoopvareventLoop,_=NewEventLoop(func(ctx context.Context,connection Connection)error{time.Sleep(time.Duration(rand.Intn(3))*time.Second)ifl:=connection.Reader().Len();l>0{vardata,err=connection.Reader().Next(l)iferr!=nil{returnerr}fmt.Printf("data:%+v\n",string(data))}...
Here I usedos.Openandos.Createwhich are convenient wrappers aroundos.OpenFile. We usually don't need to callOpenFiledirectly. Notice treating EOF.Readtries to fillbufon each call, and returnsio.EOFas error if it reaches end of file in doing so. In this casebufwill still hold data. Conse...
Run:func(cmd*cobra.Command,args[]string){// Do Stuff Here},}funcExecute(){iferr:=rootCmd....
字符串格式处理(驼峰转换) https://godoc.org/github.com/naoina/go-stringutil 文本diff实现 https://github.com/pmezard/go-difflib uuid相关 https://github.com/satori/go.uuid https://github.com/snluu/uuid 去除UTF编码中的BOM https://github.com/ssor/bom 图片缩放 https://github.com/nfnt/resi...