為什么 binary.Varint 返回的結果與 binary.Read 不同？package mainimport "fmt"import "encoding/binary"import "bytes"func main() {    b := []byte{0x18, 0x2d, 0x44, 0x54, 0xfb, 0x21, 0x09, 0x40}    var i1 int64    buf := bytes.NewBuffer(b)    binary.Read(buf, binary.LittleEndian, &i1)    fmt.Printf("%s, %d\n", i1, i1)    i2, _ := binary.Varint(b)    fmt.Printf("%s, %d\n", i2, i2)}返回：%!s(int64=4614256656552045848), 4614256656552045848%!s(int64=12), 12這是操場的鏈接：https : //play.golang.org/p/vlrl_CHq0v