uint64 to byte golang code example

Example 1: golang convert string to int64

s := "97"
n, err := strconv.ParseInt(s, 10, 64)
if err == nil {
    fmt.Printf("%d of type %T", n, n)
}

Example 2: uint64 to byte golang

i := int64(-123456789)

fmt.Println(i)

b := make([]byte, 8)
binary.LittleEndian.PutUint64(b, uint64(i))

fmt.Println(b)

i = int64(binary.LittleEndian.Uint64(b))
fmt.Println(i)