object

Vuejs Mutating Object passed as a prop

由 久未见 提交于 2020-01-16 08:55:10
问题 If I'm passing (a reference to) an Object as a prop is it OK to mutate values in the prop? I'm developing a web app which will require a lot of values to be passed to a component, and I'm trying to find the best way of passing the values to the component and back to the parent. From everything I've read mutating a prop is the wrong way to do things, because next time the component is updated the values are passed back to the child component overwriting the mutations. But only the reference to

Error 438 when trying to call a sub method from a module class with parameters

由 天涯浪子 提交于 2020-01-16 08:51:14
问题 I get error 438 : Object does not support this property or method when trying to run the following code. Could you help me with that please? My macro code : Sub test() Dim upList As New ListRoot upList.msg 'this one works fine Dim g As New Gradient upList.AppendRoot g 'line that raises the issue End Sub My module class code : Public Sub AppendRoot(grad As Gradient) If IsEmpty(content.content) Then Set content.content = grad Else content.Append (grad) End If End Sub Public Sub msg() MsgBox

Error 438 when trying to call a sub method from a module class with parameters

由 删除回忆录丶 提交于 2020-01-16 08:50:08
问题 I get error 438 : Object does not support this property or method when trying to run the following code. Could you help me with that please? My macro code : Sub test() Dim upList As New ListRoot upList.msg 'this one works fine Dim g As New Gradient upList.AppendRoot g 'line that raises the issue End Sub My module class code : Public Sub AppendRoot(grad As Gradient) If IsEmpty(content.content) Then Set content.content = grad Else content.Append (grad) End If End Sub Public Sub msg() MsgBox

CoreJava（第五章）继承-03

由 房东的猫 提交于 2020-01-16 05:47:37
5.2Object：所有类的超类 1）Object类是Java中所有类的始祖，在Java中每个类都是由它扩展而来的。 2）我们可以使用Object类型的变量引用任何类型的对象。 如： Object obj = new Employee ( "张三" , 5000 ) ; // 说明我们可以使用Object类型来作为Employee类型的对象 3）Object类型的变量只能用于作为各类值的通用持有者，如果想对里面的内容进行具体操作，还需要进行相应的类型转换。 如： Employee e = ( Employee ) obj ; // 如果我们想对Employee里面的内容进行操作，则需要进行类型转换 4）Java中，只有基本类型不是对象；不管是对象数组还是基本类型的数组，它们都扩展了Object类。 如： Employee [ ] staff = new Employee [ 10 ] ; obj = staff ; // ok;对象数组 obj = new int [ 10 ] ; // ok;基本类型数组 5.2.1equals方法 1）Object类中的equals方法用于检测一个对象是否等于另一个对象。 2）Object类中，equals这个方法将判断两个对象是否具有相同的引用。 如：两个员工的姓名、身份证、薪水和入职日期都是一样的，我们就认为他们是相等的。 public

Define constructor prototype with object literal

由 浪尽此生 提交于 2020-01-16 05:07:06
问题 Which method below is best to define a constructor prototype and why? Method 1: MyConstructor.prototype.myFunction1 = function(){}; MyConstructor.prototype.myFunction2 = function(){}; Method 2: MyConstructor.prototype = { myFunction1: function(){}, myFunction2: function(){} }; I'm mostly concerned about speed. Thanks! 回答1: I would say there wouldn't be much of a difference. Using an object literal to assign to the Object.prototype is something you can't do if you're assigning the prototype

Oracle UDTs Custom type mapping for is not specified or is invalid

由 你。 提交于 2020-01-16 04:52:07
问题 I got this error, "Custom type mapping for 'ClassXX' is not specified or is invalid. Is it possible that my member value type is not correct to match db UDTs? Here is my Code: ClassXX [OracleCustomTypeMapping("DB.T_OUTERTRAN")] public class ClassXX: AOracleCustomObject<ClassXX> { [OracleObjectMapping("OUTERSYSTEMCODE")] public int OuterSystemCode { get; set; } [OracleObjectMapping("TRANSACTIONSOURCE")] public int TransactionSource { get; set; } [OracleObjectMapping("TRANSACTIONTYPE")] public

python类与对象的内置函数大全（BIF）

由 梦想与她 提交于 2020-01-16 03:15:00
关于类与对象的一些常用 BIF（内置函数） 1、issubclass(class,classinfo) 含义：如果class是classinfo的子类，则返回True，否则返回false，用来判断子类关系 2、isinstance(objiect,classinfo) 含义：检查一个实例对象是否属于一个类，第一个参数为实例对象，第二个为类 3、hasattr(object,name) 作用：测试一个对象（object）是否具有固定的属性（name）， 属性必须带“ ”，表明是字符串。 4、 getattr(object,name[,default]) 作用：返回一个特定对象的 属性的特定值（前提是该对象具有该属性） ，如果该对象没有这个属性，则为了提高用户的体验，可以将第三个参数default设置为“你所访问的属性不存在”，这样当不存在属性的时候就可以返回“你所访问的属性不存在”。 5、 setattr(object,name,value) 作用：对对象进行属性的新定义—— 设置新属性 6、delattr(object,name) 作用：用 来删除对象的固定属性 ，如果该对象没有这个属性的话，就会抛出异常 7、property(fget=none,fset=none,fdel=none.doc=none) 作用：通过属性定义属性，property() 是一个比较奇葩的BIF

How to create XML document from nested objects?

由 孤者浪人 提交于 2020-01-16 02:34:08
问题 I'd like to created an xml document with nested elements from an object with nested objects but the xml file comes out too flat. How can I get this to iterate the objects within objects to create elements within elements. public object traverse(object pc, string xpath, XmlDocument xmldoc) { IEnumerable enumerable = pc as IEnumerable; if (enumerable != null) { foreach (object element in enumerable) { RecurseObject ro = new RecurseObject(); ro.traverse(elementArray, xpath, xmldoc); } } else {

How to create XML document from nested objects?

由 生来就可爱ヽ(ⅴ＜●) 提交于 2020-01-16 02:34:05
问题 I'd like to created an xml document with nested elements from an object with nested objects but the xml file comes out too flat. How can I get this to iterate the objects within objects to create elements within elements. public object traverse(object pc, string xpath, XmlDocument xmldoc) { IEnumerable enumerable = pc as IEnumerable; if (enumerable != null) { foreach (object element in enumerable) { RecurseObject ro = new RecurseObject(); ro.traverse(elementArray, xpath, xmldoc); } } else {

PHP removing values meeting specific conditon from array

由 落花浮王杯 提交于 2020-01-16 00:44:57
问题 So, long story short, I have an array of date objects ($occupied). I want to compare these dates to a $now=dateTime() so that any $occupied[$i] that happens before $now will get removed. I have tried some solution with unset, another one with (a brand new) array_push(). Neither of it has worked, so i guess i am missing some logic apart from the obvious.. Any approach is welcome :) Here is interesting part of the code: $occupied=["2016-02-19", "2016-02-20", "2016-02-21", "2016-02-18", "2016-02
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