在 GoLang 中将 int64 切片转换为字节数组，反之亦然 |

pet*_*rSO 5

例如，

package main

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

func main() {

    w64 := []int64{math.MinInt64, -1, 0, 1, math.MaxInt64}
    fmt.Println(w64)

    // Write []int64 to database []byte
    wbuf := new(bytes.Buffer)
    err := binary.Write(wbuf, binary.LittleEndian, w64)
    if err != nil {
        fmt.Println("binary.Write failed:", err)
    }
    db := wbuf.Bytes()
    fmt.Printf("% x\n", db)

    // Read database []byte to []int64
    rbuf := bytes.NewBuffer(db)
    r64 := make([]int64, (len(db)+7)/8)
    err = binary.Read(rbuf, binary.LittleEndian, &r64)
    if err != nil {
        fmt.Println("binary.Read failed:", err)
    }
    fmt.Println(r64)
}

输出：

[-9223372036854775808 -1 0 1 9223372036854775807]
00 00 00 00 00 00 00 80 ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ff ff ff ff ff ff ff 7f
[-9223372036854775808 -1 0 1 9223372036854775807]

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