Go file operation

This is a creation in Article, where the information may have evolved or changed.

The go language supports a lot of file operations
1. Traditional file operation
Package required for import file operation

import"os"

1, the opening of the file

f := os.Open(filepath)

2, the file read

f.Read([]byte)

3. Closing of files

F.close ()

这里写代码片

OpenFile, err: = OS. Open ("Test.go")//correct opening of the file returns ERR: = Nil
//here if the file open exception, throw an error
if err! = Nil {
//panic function terminates the program's run, and the print error is equivalent to C/ The Assert () function in
Panic ("Open File Error")
}
//defer is equivalent to a destructor in C + +, and before the program ends, the function after which it runs
defer openfile. Close ()
//Allocate memory, store read data
Buff: = Make ([]byte, +)
for n, err: = OpenFile. Read (Buff); Err = = Nil; N, err = OpenFile. Read (Buff) {
Fmt. Print (String (buff[:n)))
}
//File load Error, throw exception
If err! = Nil {
Panic (FMT. Sprintf ("Read occurs error:%s", err))
}