overriding

问题 Let's say I have an interface as follows. interface CardHolder : IEnumerable<Card> { /// <summary> ... void PutCard(Card card); /// <summary> ... void PutCards(Card[] card); /// Some more methods... } I implement it as follows. public class ArrayCardHolder : CardHolder { private Card[] _cards; private int _size = 0; public ArrayCardHolder(int capacity) { _cards = new Card[capacity]; } public void PutCard(Card card) { if (IsFull()) throw new Exception("This CardHolder is full. Capacity: " +

问题 I've tried to extend Resources class, so i can override getString(int id) methode, so can do some effects to every String needed within my Activity , here i provide some my code: public class CustomResource extends Resources { public CustomResource(AssetManager assets, DisplayMetrics metrics, Configuration config) { super(assets, metrics, config); } @Override public String getString(int id) throws NotFoundException { return super.getString(id) + " $$"; } } and in my Activity : CustomResource

问题 I've tried to extend Resources class, so i can override getString(int id) methode, so can do some effects to every String needed within my Activity , here i provide some my code: public class CustomResource extends Resources { public CustomResource(AssetManager assets, DisplayMetrics metrics, Configuration config) { super(assets, metrics, config); } @Override public String getString(int id) throws NotFoundException { return super.getString(id) + " $$"; } } and in my Activity : CustomResource

问题 I'm making a game in pygame and I have made an 'abstract' class that's sole job is to store the sprites for a given level (with the intent of having these level objects in a list to facilitate the player being moved from one level to another) Alright, so to the question. If I can do the equivalent of this in Python(code curtesy of Java): Object object = new Object (){ public void overriddenFunction(){ //new functionality }; }; Than when I build the levels in the game I would simply have to

问题 I'm making a game in pygame and I have made an 'abstract' class that's sole job is to store the sprites for a given level (with the intent of having these level objects in a list to facilitate the player being moved from one level to another) Alright, so to the question. If I can do the equivalent of this in Python(code curtesy of Java): Object object = new Object (){ public void overriddenFunction(){ //new functionality }; }; Than when I build the levels in the game I would simply have to

问题 I'm making a game in pygame and I have made an 'abstract' class that's sole job is to store the sprites for a given level (with the intent of having these level objects in a list to facilitate the player being moved from one level to another) Alright, so to the question. If I can do the equivalent of this in Python(code curtesy of Java): Object object = new Object (){ public void overriddenFunction(){ //new functionality }; }; Than when I build the levels in the game I would simply have to

问题 Maybe you know some "right-way" to override class property from child class method <?php class A { public $option; public function __construct() { $this->option = array(1,2,3); } public function bb() { $obj = new B; $obj->aa(); print_r($this->option);die; } } class B extends A { public function __construct() { parent::__construct(); } public function aa() { $this->option[] = 4; //print_r($this->option);die; } } $obj3 = new A; $obj3->bb(); ?> returns Array ( [0] => 1 [1] => 2 [2] => 3 )

问题 Maybe you know some "right-way" to override class property from child class method <?php class A { public $option; public function __construct() { $this->option = array(1,2,3); } public function bb() { $obj = new B; $obj->aa(); print_r($this->option);die; } } class B extends A { public function __construct() { parent::__construct(); } public function aa() { $this->option[] = 4; //print_r($this->option);die; } } $obj3 = new A; $obj3->bb(); ?> returns Array ( [0] => 1 [1] => 2 [2] => 3 )

问题 class X { protected int v = 0; public X() { v += 10; } public void proc(X p) { System.out.println(43); } } class Y extends X { public Y() { v += 5; } public void proc(X p) { System.out.println(57); } public int getV() { return v; } } class Z extends Y { public Z() { v += 9; } public void proc(Z p) { System.out.println(39); } } class Main { public static void main(String[] args) { X x = new Z(); Y y = new Z(); Z z = new Z(); x.proc(z);// 1 System.out.println(y.getV()); } } From what I can

问题 For example, if I want to override malloc(), what's the best way to do it? Currently the simplest way I know of is: malloc.h #include <stdlib.h> #define malloc my_malloc void* my_malloc (size_t size); foobar.c #include "malloc.h" void foobar(void) { void* leak = malloc(1024); } The problem with this approach is that we now have to use "malloc.h" and can never use "stdlib.h". Is there a way around this? I'm particularly interested in importing 3rd party libraries without modifying them at all,