Read (Multi) in Go

Posted by GoDoc
Public (Editable by Users)

Read reads structured binary data from r into data. Data must be a pointer to a fixed-size value or a slice of fixed-size values. Bytes read from r are decoded using the specified byte order and written to successive fields of the data. When decoding boolean values, a zero byte is decoded as false, and any other non-zero byte is decoded as true. When reading into structs, the field data for fields with blank (_) field names is skipped; i.e., blank field names may be used for padding. When reading into a struct, all non-blank fields must be exported or Read may panic.

Go
Edit 
package main

import (
	"bytes"
	"encoding/binary"
	"fmt"
)

func main() {
	b := []byte{0x18, 0x2d, 0x44, 0x54, 0xfb, 0x21, 0x09, 0x40, 0xff, 0x01, 0x02, 0x03, 0xbe, 0xef}
	r := bytes.NewReader(b)

	var data struct {
		PI   float64
		Uate uint8
		Mine [3]byte
		Too  uint16
	}

	if err := binary.Read(r, binary.LittleEndian, &data); err != nil {
		fmt.Println("binary.Read failed:", err)
	}

	fmt.Println(data.PI)
	fmt.Println(data.Uate)
	fmt.Printf("% x\n", data.Mine)
	fmt.Println(data.Too)
}