*nameOfStruct 和 []nameOfStruct 在 Go （* 和 []）之间的区别

Question

我对GoLang比较陌生，我有两种方法和所有关闭的方法都是访问结构，但我不知道*ShipmentBaseModel和[]ShipmentExpiredModel有什么区别，为什么不使用[]全部关闭它们或这个*？

func (c *shipment) FindOneByGroupID(ctx context.Context, groupID string) (*ShipmentBaseModel, error) {

    span, ctx := tracer.StartSpanFromContext(ctx, "Repo: Shipment FindOneByGroupID")

    defer span.Finish()

    var output *ShipmentBaseModel

    rows, err := c.ps[shipmentFindOneByGroupID].Query(groupID)

    if err != nil {

        return nil, err

    }

    return output, result.LoadOne(ctx, rows, &output)

}

func (c *shipment) FindAllShipmentPickupExpired(ctx context.Context) ([]ShipmentExpiredModel, error) {

    span, ctx := tracer.StartSpanFromContext(ctx, "Repo: Invoice FindAllShipmentPickupExpired")

    defer span.Finish()

    var output []ShipmentExpiredModel

    rows, err := c.ps[shipmentFindAllShipmentPickupExpired].Query(ShipmentTypePickup, AccountRoleCustomer, StatusCRRSRC, 100)

    if err != nil {

        return nil, err

    }

    _, err = result.LoadToStruct(ctx, rows, &output)

    return output, err

}

Answer 1

*shipmentBaseModel是一个 shipmentBaseModel和[]shipmentBaseModel是一个claustBaseModel，如果你想在Go中对什么是指针和切片有更多的定义，我认为你应该继续去文档并检查em out切片指针pointerslice