object

问题 I am working on migration of angular 1 project to angular 2 . In angular 1 project I was using angular.equals for object comparison angular.equals($ctrl.obj1, $ctrl.newObj); , I searched online for equivalent method in angular 2 but could not find any matching result. 回答1: @Günter Yes you are right there is no equivalent in angular2 . While searching more I found third party library loadash which will do same job as angular.equals and syntex is same as angular one and this library solves my

问题 I am making a game in HTML5, and now I just got a disturbing problem. In my game I have an Array with all the particles, all the particles have expire-timers, with different random generated delays. When the expire-timers expire they delete there own Object with the Array.splice() function, that causes trouble, since the Array.splice() function will mess up the order of the Array. First I had the function like this: (n = Blood particles to spawn, and x and y = starting point.) (All particles

问题 Is it possible to get a Object that is instanced in the Code by a String at Runtime? Somthing like that: public String xyz = "aaaa_bbb"; getObject("xyz").some function of String (e.g.: .split("_")) Thanks 回答1: Here's an example If it's a class field, you can get it by name like this. import java.lang.reflect.Method; public class Test { public String stringInstance = "first;second"; public void Foo() { try { Object instance = getClass().getDeclaredField("stringInstance").get(this); Method m =

问题 I'll be as direct as I can concerning this problem, because there must be something I'm totally missing coming from a structured programming background. Say I have a Player class. This Player class does things like changing its position in a game world. I call this method warp() which takes a Position class instance as a parameter to modify the internal position of the Player. This makes total sense to me in OO terms because I'm asking the player "to do" something. The issue comes when I need

问题 I was reading this article on Java Generics and there it is mentioned that the constructor for an ArrayList looks somewhat like this: class ArrayList<V> { private V[] backingArray; public ArrayList() { backingArray = (V[]) new Object[DEFAULT_SIZE]; } } I was not able to understand how type erasure and type checking by the compiler happens as explained there. One point I got was that the type parameter is transformed to Object type. I would imagine it as (replacing all V with Object ), but

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: I have a nested data structure / JSON, how can I access a specific value? I have a json object, like the one below: [ ["Blankaholm", "Gamleby"], ["2012-10-23", "2012-10-22"], ["Blankaholm. Under natten har det varit inbrott", "E22 i med Gamleby. Singelolycka. En bilist har.], ["57.586174","16.521841"], ["57.893162","16.406090"] ] It consists of 4 "property levels" (city, date, description and coordinates). What

问题 I'm serializing my objects with ObjectOutputStream(FileOutputStream(File)) and deserializing them with the analogous InputStreams . Is there a way to look inside of these serialized files (in eclipse preferably), so I can check, if all necessary attributes were written? edit: google search was negative 回答1: Write some tests (using Eclipse's built-in JUnit support). The only way to "look inside" these files is to use ObjectInputStream(FileInputStream(File)) , unless you're a bytecode guru and

问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Python (and Python C API): new versus init I'm at college just now and the lecturer was using the terms constructors and initializers interchangeably. I'm pretty sure that this is wrong though. I've tried googling the answer but not found the answer I'm looking for. 回答1: In most OO languages, they are the same step, so he's not wrong for things like java, c++, etc. In python they are done in two steps: __new__

问题 Is it possible to have a dictionary of object/classes in vbscript? For example: Class employeeclass Public first, last, salary End Class Dim employeedict: Set employeedict = CreateObject("Scripting.Dictionary") 'Loop would be here Dim employee: Set employee = new employeeclass With employee .first = "John" .last = "Doe" .salary = 50000 End With employeedict.Add "1", employee EDIT The above does work . 回答1: (Answering own question) Yes, its possible to use a dictionary of objects/classes in

问题 How to convert (cast) Object to Array without Class Name prefix in PHP? class Teste{ private $a; private $b; function __construct($a, $b) { $this->a = $a; $this->b = $b; } } var_dump((array)(new Teste('foo','bar'))); Result: array '�Teste�a' => string 'foo' (length=3) '�Teste�b' => string 'bar' (length=3) Expected: array ( a => 'foo' b => 'bar' ) 回答1: From the manual: If an object is converted to an array, the result is an array whose elements are the object's properties. The keys are the