Waystocreatecoroutine: Launch{}: Nonblocking. Codeafterthecoroutineblockcanrunimmediatelywhilethecoroutineisrunning. Launchcanonlybeinvokedwithinacoroutinescope. Launchreturnsajob.Job.join()waitsforthelaunchblocktocomplete. runBlocking{}: Blocking.Waitforitsbodyanda...
KeyfeaturesofReactor: · Avoidingcallbackhell. Multipletaskscanbeorchestrated. · Analogoustoassemblyline. · Publisher: publishesdata,eachoperatorwrapstheprevioussteppublisherintoanewinst...
POS订单模型: 属性名称 描述 POSOrder.status Totaled(订单完成,销售或退货)TransactionVoided(终止交易,未支付)PostVoided(取消交易,已支付)Suspended(挂起) POSOrderLine.voidFlag true/false订单行是否被删除 POSOrderSummary.typeCode Sale 销售,金额为正Return 退货,金额为负 POSOrderLineProduct.orderLineType Sale ...
参考: 本文是根据王树森老师的网络教学视频提取出我认为关键信息,作为自己学习的笔记.原始视频为: https://www.youtube.com/watch?v=NWcShtqr8kc&list=PLvOO0btloRnuTUGN4XqO85eKPeFSZsEqK&index=2 特征生成: 数字特征: 比如年龄,不需要编码. 分类特征: 比如国家,需要用ONE-HOT编码,[1,0,0,0,…,0].长度为所有可能值.为啥不直接用数字?字加法会引起特征值混淆,而ONE-HOT编码不会,[0,0,0,0…0]表示未知值. 文本特征: 文本->...