oop

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How to write proper OOP code in order to avoid having field initialization issues?

Running this piece of code will print null public class Weird { static class Collaborator { private final String someText;[详细]

2023-04-12 21:15 分类：问答
Name for a method that has only side effects

So, a method that alters its object is a mutator. A method that does not alter its object but returns a value (or reference to a value) is a getter. Is there a widely used name for a method that does[详细]

2023-04-12 21:14 分类：问答
Using Registry class instead of Global variables. How to make it better

I am trying to create a better registry class, soI don\'t have to declare global variables like some database connections, using sensitive infor开发者_运维百科mation in a global variable.[详细]

2023-04-12 20:07 分类：问答
How to reference the stage object in external actionscript files?

I have an external AS3 class file which is loaded up on the first frame of the Flash movie. How can I reference the stage object in the AS3 file without having to pass it as a parameter?I mean it see[详细]

2023-04-12 20:01 分类：问答
call a function from inside a function php oop

I wonder if this is possible, although I\'m quite convince maybe there is a better approach for this. I have this script structure:[详细]

2023-04-12 17:19 分类：问答
How do you get MotherDogRobot to birth an array of puppy objects using map and a hash of hashes?

Puppy meta data gets read in from config file using (General::Config) and creates this hash of hashes[详细]

2023-04-12 17:04 分类：问答
Immutable types in javascript

It seems to me that immu开发者_如何学Pythontable types are impossible in Javascript, or does anyone know of any tricks to create them? Is it a good or bad practice?[详细]

2023-04-12 16:56 分类：问答
Why i'm getting such null in my input

I need to code simple calculator with UI in one class and model in another, but how can I right access data from another class? for example? if i press 123 i\'ll get in text such output null123 ? Help[详细]

2023-04-12 16:45 分类：问答
NullPointerException in Java code

I\'m learning Java and OOPS from oracle\'s website.I\'m doing this exercise. I\'m getting a null pointer exception when I run this code. Can someone explain to me what I\'ve done wrong?[详细]

2023-04-12 15:28 分类：问答
pattern to proxy (different) methods to many different classes

I have a bunch of classes with a unique set of methods. class1 { method1(dbconn, args...); method2(dbconn, args...);[详细]

2023-04-12 15:18 分类：问答