在GoLang中将int64的Slice转换为字节数组，反之亦然

Question

I need to convert a slice of int64 to a byte array in golang. I am successfully able to do so for a single int64

var p int64 = -3984171602573983744
fmt.Println(p)
cn := make([]byte, 8)
binary.LittleEndian.PutUint64(cn, uint64(p))
fmt.Println(cn)

How can I implement it for a slice of int64?

To be more precise, I am trying to call a function in a library which writes to a DB, and that function takes a byte array as a param. I have a slice of int64 which I need to convert to a byte array and vice versa. Is this possible?

Answer 1

For each of the int64's loop and store it like binary.LittleEndian.PutUint64(cn[x:], yourUint64), where x becomes 0,8,16...as you loop. Your cn should be big enough to take all the data (it'll be some multiple of 8). When you want to read, do the reverse: x1 := binary.LittleEndian.Uint64(cn[n:n+8]), where n becomes 0, 1, 2..

See https://play.golang.org/p/YVQOAG8-Xlm for a simpler muxing-demuxing example.