Go file operations

WriteProgramFile operations are not available,Summary:GoLanguage file operations.

1. Create and open

Create a file function:

Func create (name string) (File * file, err error)

Func newfile (FD int, name string) * File

For details, see the official website:Http://golang.org/pkg/ OS /#Create

 

Open the file function:

Func open (name string) (File * file, err error)

Func openfile (name string, flag int, Perm uint32) (File * file, err error)

For details, see the official website:Http://golang.org/pkg/ OS /#Open

 

Ii. Writing files

File writing functions:

Func (File * file) write (B [] Byte) (N int, err error)

Func (File * file) writeat (B [] Byte, off int64) (N int, err error)

Func (File * file) writestring (s string) (Ret int, err error)

For details, see the official website:Http://golang.org/pkg/ OS /#File.Write 

File writing exampleCode:

 PackageMain  Import(  "OS"  "FMT" )  FuncMain (){  Userfile: ="Test.txt"  Fout, err: = OS. Create (userfile)  DeferFout. Close () IfErr! =Nil{  FMT. println (userfile, err)  Return }  ForI: =0; I <10; I ++ {    fout. writestring (   "just a test!    \ r \ n   "  ) Fout. Write ([]Byte("Just a test!\ R \ n"))  }  } 

Iii. Reading files

File Read functions:

Func (File * file) read (B [] Byte) (N int, err error)

Func (File * file) readat (B [] Byte, off int64) (N int, err error)

For details, see the official website:Http://golang.org/pkg/ OS /#File.Read

Sample Code for reading a file:

 PackageMain  Import( "OS"  "FMT"  )  FuncMain (){  Userfile: ="Test.txt" Fin, err: = OS. Open (userfile)  DeferFin. Close ()  IfErr! =Nil{ FMT. println (userfile, err)  Return  } Buf: =Make([]Byte,1024)  For{ N, _: = fin. Read (BUF)  If0= N {Break}  OS. stdout. Write (BUF [: N]) }  } 

4. delete an object

Function:

Func remove (name string) Error

For details, see the official website:Http://golang.org/pkg/ OS /#Remove