overriding

Assuming the latest XCode and GCC, what is the proper way to override the memory allocation functions (I guess operator new/delete as well). The debugging memory allocators are too slow for a game, I just need some basic stats I can do myself with minimal impact. I know its easy in Linux due to the hooks, and this was trivial under codewarrior ten years ago when I wrote HeapManager. Sadly smartheap no longer has a mac version. I would use library preloading for this task, because it does not require modification of the running program. If you're familiar with the usual Unix way to do this, it

I'm having a problem with getting an ArrayList to correctly use an overriden equals. the problem is that I'm trying to use the equals to only test for a single key field, and using ArrayList.contains() to test for the existence of an object with the correct field. Here is an example public class TestClass { private static class InnerClass{ private final String testKey; //data and such InnerClass(String testKey, int dataStuff) { this.testKey =testKey; //etc } @Override public boolean equals (Object in) { System.out.println("reached here"); if(in == null) { return false; }else if( in instanceof

I have base class A public class A { public virtual void Method(A parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } public virtual void Method(B parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } } Inhereted B public class B : A { public virtual void Method(object parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } public override void Method(A parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } public override void Method(B parameter) { Console.WriteLine(MethodBase.GetCurrentMethod()); } } Static class S with extension method public

There are several situations where you might override a super class's property. You declare a property with the same name and same attribute of its superclass'.(since if you change the attribute you can get an compiler warning).And you can synthesieze with an ivar that you create. What's the use of this? Or what's the harm can it do? If a superclass declares a property in a class extension (a category with no name), then it might not be in the header file. If you don't know that property from the header file, you can declare the same name property with what ever attribute or class you want.

When I try to override a property I get an error "can not override mutable property with read-only property" I have provided get and set in the super class. class Card { var contents:String { get { return self.contents } set { self.contents = newValue } } init() { self.contents = "" } } Here is my Subclass where I am trying to override the "contents" property. class PlayingCard: Card { override var contents:String { //<-- this is where I get the build error get { var rankStrings:Array<String> = PlayingCard.rankStrings() return rankStrings[Int(self.rank)] + self.suit } } } What exactly am I

In Objective C, if you are subclassing something, and are planning to override a method on the superclass, should you re-declare the superclass method in your subclass @interface? For example, if you are subclassing UIViewController (e.g. MyViewController), and you are planning to override "viewDidLoad" should you include that method in your MyViewController @interface declaration, or just implement it in MyViewController.m? In examples I've come across, I've seen it done both ways (re-declaring the method in your subclass interface, or not re-declaring the method). There may not be any

I'm trying to overriding a helper method of base_helper.rb by using this: module Spree module BaseHelper.class_eval do def taxons_tree(root_taxon, current_taxon, max_level = 1) ..... end end end It's not working for me. Anyone know what I am missing here? Thank you! Fixed: I should use: Spree::BaseHelper.module_eval do def taxons_tree(root_taxon, current_taxon, max_level = 1) ... end end instead. Re-opening the module will work just as well: module Spree module BaseHelper def taxons_tree(root_taxon, current_taxon, max_level = 1) ... end end end There's no particular reason to use class_eval