overriding

How to change behavior of dict() for an instance

↘锁芯ラ 提交于 2019-12-02 14:56:58
So I'm writing a class that extends a dictionary which right now uses a method "dictify" to transform itself into a dict. What I would like to do instead though is change it so that calling dict() on the object results in the same behavior, but I don't know which method to override. Is this not possible, or I am I missing something totally obvious? (And yes, I know the code below doesn't work but I hope it illustrates what I'm trying to do.) from collections import defaultdict class RecursiveDict(defaultdict): ''' A recursive default dict. >>> a = RecursiveDict() >>> a[1][2][3] = 4 >>> a

Stack overflow exception thrown from overridden property from abstract base class

橙三吉。 提交于 2019-12-02 13:41:32
I have a base class with the following (trimmed for brevity) declaration: public abstract class MyBaseClass { public int RecordId { get; private set; } public string ObjectName { get; set; } public abstract string Status { get; set; } public GetMyObject(int id) { MyObject myObject = context.GetObjectById(id); this.RecordId = myObject.RecordId; this.ObjectName = myObject.ObjectName; this.Status = myObject.Status } } Which is used by the following class: public class MySpecificClass : MyBaseClass { public override string Status { get { if(this.Status == "something") return "some status"; else

Override public method in subclass in a way that restricts public access while still allowing access from parent class?

一个人想着一个人 提交于 2019-12-02 13:08:35
I have a generic Collection class, with a variety of public getter methods. To get one item from the Collection, you call get(). There are also several methods that return multiple items: getMany(), getRange(), getAll(), find(), findAll(), query(), queryAny(), etc. Internally, all of these methods that return multiple items have a loop that calls get() repeatedly, as they aggregate the individual items to return. A simplified example: public function get($key){ return $this->collection[$key]; } public function getMany($keys){ $many = array(); foreach ($keys as $key){ $many[] = $this->get($key)

SharePoint 2010 >> Editing Output HTML >> Issues with page or master page render override

自闭症网瘾萝莉.ら 提交于 2019-12-02 13:04:19
问题 Ok. This is a big one. I'll try and explain my issue but let me know if you need more info. I would like to alter the HTML that SharePoint 2010 generates. I'm going to use the HTML Agility Pack] which will take a string of HTML among other objects and alter the source. There are 2 ways of altering the full source in SP. Using Control Adapters, or Extending Controls I can access the Page, MasterPage or even ContentPlaceHolder render methods, grab the HTML, Alter it and then write it. Use a

Resize and reposition the application created using createprocess?

大城市里の小女人 提交于 2019-12-02 12:52:49
问题 I'm executing an application say notepad, using createprocess. I need to override the default size and position of that application so i modified STARTUPINFO, and specified dwX,dwY,dwYSize,dwXSize and added STARTF_USEPOSITION||STARTF_USESIZE to dwFlags. But the application is not opening at all. If i put one of STARTF_USEPOSITION and STARTF_USESIZE, the application opens but not reposition or resize. Is there anyway to do that?? { STARTUPINFO siStartupInfo; PROCESS_INFORMATION piProcessInfo;

Override spring bean without an alias that is also the parent

删除回忆录丶 提交于 2019-12-02 12:44:40
I have a bean in module1-spring.xml - <bean id="parent" class="com.Parent"/> <bean id="service" class="com.Service"> <property name="parent" ref="parent"/> </bean> I want to override the bean in module2-spring.xml - <bean id="child" class="com.Child" parent="parent"/> I want child to be passed in service instead of parent . If I alias child as parent i.e. <alias id="child" alias="parent"/> then the parent attribute will read child instead of parent bean and fail on server startup with error- BeanDefinitionStoreException: Invalid bean definition with name 'child' defined in class path resource

Scala, class using mutable var, update in overriding method

雨燕双飞 提交于 2019-12-02 12:35:19
I am having a hard time understanding how to get the following code structure to work. In Scala I have a class MyClass which inherits from SomeClass I added a var member variable in this case called mutableArray and it is being updated in the overridden method overridingSomeClassMethod and is called when I create a new instance of the MyClass a number of times right away. But in main when I try and get the updated mutableArray variable it prints out the instantiated var as if it is immutable or only has scope in the overriding method. I can't change the method in parent SomeClass , and I tried

Can I tell if a C++ virtual function is implemented

人走茶凉 提交于 2019-12-02 12:29:51
问题 I want to be able to tell at run-time if an instance of a class implements a virtual function. For example: struct Base { virtual void func(int x) { <default behavior here> } virtual void func2(int x) { <default behavior here> } }; struct Deriv : Base { virtual void func(int x) override { <new behavior here> } }; int main() { Base *d = new Deriv; if(implements<Base::func(int)>(d)) // This should evaluate true {} if(implements<Base::func2(int)>(d)) // This should evaluate false {} } I have

C# overload with override

半世苍凉 提交于 2019-12-02 12:14:06
I can surely answer to this question by myself writing a dummy test but I want to know what people think about the question. Here it is: Which method will be call when we have both at the same time overloading and overriding? I am only considering Type overloading and not arity overloading and when Type the overload are related. Let me throw you an example: class AA {} class BB : AA {} class A { public virtual void methodA(AA anAA) { Console.Write("A:methodA(AA) called"); } public virtual void methodA(BB aBB) { Console.Write("A:methodA(BB) called"); } } class B : A { public override void

Force template method in non-template class

纵然是瞬间 提交于 2019-12-02 11:48:49
问题 I try to achieve the following behavior/syntax/usage of this class: Data1 dataType1; Data2 dataType2; int intType; float floatType; dataType1.method( intType ); dataType1.method( floatType ); dataType2.method( intType ); dataType2.method( floatType ); My approach would be this: struct CDataBase { template< typename T > virtual void method( T type ) = 0; }; struct CData1 : CDataBase { template< typename T > void method( T type ) {} }; struct CData2 : CDataBase { template< typename T > void