a set of意思是:一套、一组、一幅比如:this is a set of furniture.(这是一组家具)set of这个搭配缺少冠词“a”,所以不存在,从语法上来说是错误的。sets of意思是:一套套(的)、一组组(的)、一幅幅(的)。比如:these are sets of furnitures.这是一些家具组。(或:这是几组家具。) set down 英[se...
An object A does not hold a reference to an object B, but B is used in a method of A. Then the relationship between A and B is B. Inheritance C. Dependencies D. Aggregation E. Compostion 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
常用解决办法NullReferenceException:Object,本文介绍一些常见的导致NullRefereceExcetio:Ojectrefereceotettoaitaceofaoject错误出现的原因,并给出相应的解决办法
{if(o.IsEmpty()) {returndefaultString; }returnConvert.ToString(o); } 然后我们 抛弃微软的 ToString()—我暂时称之为非安全转换,我们在使用 object.ToSafeString() 来进行安全转换。 Int32? a =null;varb = a.ToSafeString(“”);//这样就不会抛出异常:object null reference 现在把相关其他类型转换...
aABC公司乔治经理 Manager ABC Corporation George[translate] aAn ISpatialReference object. ISpatialReference对象。[translate] a物体正在被接近 The object is being approached[translate] aAn I Spatial Reference object. 正在翻译,请等待...[translate]
Reference Feedback DefinitionNamespace: Microsoft.VisualStudio.Debugger.Interop Assembly: Microsoft.VisualStudio.Debugger.InteropA.dll Package: Microsoft.VisualStudio.Debugger.InteropA v17.12.40391 public: int IsNullReference([Runtime::InteropService...
a婚姻是无聊的 The marriage is bored[translate] a是的 也很潇洒啊 Is very is also natural[translate] a翻译公司家是自由的 The translation company is free[translate] aDear Nelle, please print out the 20 tips for David 正在翻译,请等待... ...
对象引用未设置为； The library contains many popular works of reference. 这家图书馆藏有许多常用的参考书。 扩展资料 There is a list of references at the end of each chapter.每一章的.后面都有一组参考书目。Keep the list of numbers near the phone for easy reference.把电...
Reference Definition Namespace: Microsoft.AnalysisServices.Tabular Assembly: Microsoft.AnalysisServices.Tabular.dll Package: Microsoft.AnalysisServices v19.87.2 Gets a value indicating whether the object referenced is valid. C# publicboolIsValid {get; } ...
A reference to an object that implements IPoint.问题补充:匿名 2013-05-23 12:21:38 null 匿名 2013-05-23 12:23:18 一提到一个对象,实施ipoint。 匿名 2013-05-23 12:24:58 在对象的参考那贯彻IPoint。 匿名 2013-05-23 12:26:38 实现IPoint 对象的引用。 匿名 2013-05-23 12...