Use encoding/binary to safely convert integers and floats to byte slices with specific endianness for binary data handling.
Use encoding/binary to convert between primitive types and byte slices by specifying the byte order (LittleEndian or BigEndian). This is essential for reading binary protocols or file formats where data is packed into fixed-size fields.
import "encoding/binary"
// Convert int64 to 8-byte slice (BigEndian)
var b []byte
b = make([]byte, 8)
binary.BigEndian.PutUint64(b, 12345)
// Convert 8-byte slice back to int64
val := binary.BigEndian.Uint64(b)
The encoding/binary package acts as a translator between human-readable numbers and the raw bytes computers store in memory. It ensures that when you read or write binary data, the order of bytes matches the expected format, preventing data corruption. Think of it like a universal adapter that ensures a plug fits correctly into a socket regardless of the region.