go - 尝试生成唯一的int64时生成负数的代码

Question

我正在尝试使用下面的Go代码创建唯一的int64

unixtimestamp := time.Now().UnixNano()
    node := AppConfig.NodeID << 44
    timestamp := unixtimestamp << 12
    var sequenceID int64
    for sequenceID = 1; sequenceID <= count; sequenceID++ {
        id := node | timestamp | sequenceID
        idList = append(idList, id)
    }

上面的代码也生成负数。我如何解决它？

Answer 1

检查是否为负使其为正:

unixtimestamp := time.Now().UnixNano()
node := AppConfig.NodeID << 44
timestamp := unixtimestamp << 12
var sequenceID int64
for sequenceID = 1; sequenceID <= count; sequenceID++ {
    id := node | timestamp | sequenceID
    if id < 0 {
        id = id *  -1
    }
    idList = append(idList, id)
}