golang bytes.buffer

 

 

 

 

 

 

 

 

 

 

 

    var buffer1 bytes.Buffer
    contents := "Simple byte buffer for marshaling data."
    fmt.Printf("Write contents %q ...\n", contents)
    buffer1.WriteString(contents)
    fmt.Printf("The length of buffer: %d\n", buffer1.Len())
    fmt.Printf("The capacity of buffer: %d\n", buffer1.Cap())
    fmt.Println()

Contents the Write " . Marshaling for the Simple Data Buffer byte " ... // print result is such 
of The length of Buffer: 39 // output here is the total length of the length of the usable length is not read 
of The Capacity of Buffer: 64 // length capacity

1     // 示例2。
2     p1 := make([]byte, 7)
3     n, _ := buffer1.Read(p1)
4     fmt.Printf("%d bytes were read. (call Read)\n", n)
5     fmt.Printf("The length of buffer: %d\n", buffer1.Len())
6     fmt.Printf("The capacity of buffer: %d\n", buffer1.Cap())
7     fmt.Println(string(p1))

Here is the output of what we read 7 bytes from the buffer to p1 byte slice in so buffer1 properties off (counter) will back the diversion of minus 7 bytes 7 bytes length will we see next Output result

7 bytes were read. (call Read)
The length of buffer: 32
The capacity of buffer: 64

Look at sample is taken:

buffer1.Truncate ( . 6 ) // taken six byte length from the start position of the counter