How to Read from and Write to Bytes Buffers with bytes.Buffer

Use Write and WriteString to add data, and Read, ReadString, or Bytes to retrieve it from a bytes.Buffer.

import "bytes"

var buf bytes.Buffer

// Write data
buf.WriteString("Hello, ")
buf.Write([]byte("World!"))

// Read data
content := buf.String() // Get full content as string
// or
data := buf.Bytes()     // Get full content as []byte
// or
buf.Reset()             // Clear buffer for reuse

A bytes.Buffer is a reusable container for building or processing byte data in memory without creating many temporary strings. You write data into it to accumulate content and read it out when you need the final result. Think of it like a notepad where you can scribble notes, erase them, or read the whole page at once.