class

问题 I have 3 classes : class Scene(object): def enter(self): pass class CentralCorridor(Scene): def enter(self): pass class Map(object): def __init__(self, start_game): pass And the class map is initiated like this : a_map = map('central_corridor') It means that there is a map(obviously not graphical like a maze let's suppose) in which the first scene of the game(the game is like zork) is central corridor. So I want to use the enter method of the class CentralCorridor in the map class but I am

问题 I want some Python class having similar methods as list (assuming it's called mylist ) except that mylist accepts elements of a specific type (instances of another customed class to store some data in my case). I read some posts on SO and knew that I need to override some methods as append , extend , insert . But I'm not sure about everything I need to override to guarantee that in all operations (e.g. append, add, extend, insert, slice...) to instances of mylist there will be no problem. And

问题 I have defined a class like this: class CircularBuffer { private: struct entry { uint64_t key; int nextPtr; int prevPtr; int delta; }; int head, tail, limit, degree; entry *en; public: CircularBuffer(int a, int b) { limit = a; head = 0; tail = limit -1; degree = b; en = new entry[ limit ]; for (int i=0; i<limit; i++) { en[i].key = 0; en[i].delta = 0; en[i].nextPtr = 0; en[i].prevPtr = 0; } }; ~CircularBuffer() { delete [] en; } }; And in another file I have included this class (the header

问题 This question already has answers here : Why can't we have static method in a (non-static) inner class? (14 answers) Closed 5 years ago . Im trying to understand how inner class works and while experimenting with some simple code i got a error : The method hello cannot be declared static; static methods can only be declared in a static or top level type on this code public class Class1 { public static void main(String[] args) { Class1 c = new Class1(); c.show(); } public static void show() {

问题 I'm learning object oriented programming in python and I'm not too sure how to write methods for classes My first question is, can you inherit two classes at the same time? Example: class A: def __init__ eg. storing list of strings class B: def __ init__ eg. storing list of strings # I want to inherit both class A and B into class C class C (A,B): Is this possible? many examples showed only inheritance from one class. Assuming that I can import the methods from both class A and class B , I

问题 I get a MissingResourceException when accessing a resource bundle. The problem comes up due to my specific class loader constallation. I am trying to read a text.properties from within a class which resides under JBOSS_HOME/server/myServer/myDeployDir/myEAR/myJAR.jar (note: the calling class is not in WEB-INF/classes). The text.properties file is here JBOSS_HOME/server/myServer/myDeployDir/myEAR/myWAR/WEB-INF/classes. When running the following code: Locale locale = new Locale ("de", "DE");

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I will be grateful if someone can point out where the error is occurring. class hotel extends WishDBxyz{ public nomhotel; protected idhotel, ile_idile, pays_idpays, chainehotel_idchainehotel, actif ; } Just on second line got the error Parse error: syntax error, unexpected (T_STRING), expecting variable (T

问题 I wonder how I can add a CSS class to a link based on the ID in the link, with jQuery. I wan't to add the CSS class "active" to the link if the if-statement is true. Not that I dont want to remove "pFavorite" from class in link if the statement is true, I just want to add active to, like this class="pFavorite active" Im not that in to jQuery yet. I hope my code still explains what I want to achieve. <?php foreach($statement as $p) { if(array_search($p['id'], explode(",", $_COOKIE['cookie'])))

问题 I'm trying to understand whether the answer to the following question is the same in all major OOP languages; and if not, then how do those languages differ. Suppose I have class A that defines methods act and jump ; method act calls method jump . A 's subclass B overrides method jump (i.e., the appropriate syntax is used to ensure that whenever jump is called, the implementation in class B is used). I have object b of class B . I want it to behave exactly as if it was of class A . In other

问题 i have implemented an new ImageLoaderView that extends view, with a code that works if i set the xml programatically. But as this seems to be difficult I am trying to make it work for an xml in my res layout folder, but i am getting an error. Below are my codes. LoaderImageView: package com.anon.android.test; import java.io.IOException; import java.net.MalformedURLException; import android.content.Context; import android.graphics.drawable.Drawable; import android.os.Handler; import android.os