io

io包

type Reader interface{
    Read(p []byte)(n int,err error)
}

type Writer interface{
    Write(p []byte)(n int,err err)
}

for循环中一次读出文件

n := -1
for {
    n, err = file.Read(bs)
    if n== 0 || err == io.EOF{
        fmt.Println("读取到了文件末尾，结束读取操作")
    }
    fmt.Println(string(bs[:n]))
}

来自为知笔记(Wiz)