overloading

Trying to create a custom case-insensitive dictionary, I came the following inconvenient and (from my point-of-view) unexpected behaviour. If deriving a class from dict , the overloaded __iter__ , keys , values functions are ignored when converting back to dict . I have condensed it to the following test case: import collections class Dict(dict): def __init__(self): super(Dict, self).__init__(x = 1) def __getitem__(self, key): return 2 def values(self): return 3 def __iter__(self): yield 'y' def keys(self): return 'z' if hasattr(collections.MutableMapping, 'items'): items = collections

I try to follow this article: http://flipcode.com/archives/How_To_Find_Memory_Leaks.shtml to overload my new and delete functions in order to track memory leaks. however - if I try to compile, I get a C2365: "operator new": redefinition; previous definition was a "function" in the file xdebug xdebug gets included in xlocale - however, i can't find where my project is including xlocale I'm using MFC for multithreading in my project. Can someone tell me how I can get my memory leak tracking to work? //edit: So this is my findMemoryLeak.h which i include in the end of stdafx.h #ifndef

I made a class Array which holds an integer array. From the main function, I'm trying to get an element of the array in Array using [ ] as we do for arrays declared in main. I overloaded the operator [ ] as in the following code; the first function returns an lvalue and the second an rvalue (Constructors and other member functions are not shown.) #include <iostream> using namespace std; class Array { public: int& operator[] (const int index) { return a[index]; } int operator[] (const int index) const { return a[index]; } private: int* a; } However, when I try to call those two functions from

Can I overload the PowerShell inbuilt class's methods? If yes then how? Any code sample would be great. Essentially, I am trying to overload the Equals method of a Hashtable Dictionary PowerShell object to do appropriate comparisons. I know that you can overload a cmdlet or a function in PowerShell and whatever is the latest definition that is taken up. But I am trying to overload not a cmdlet or a function, but trying to overload inbuilt method for existing class. I have already checked this post: Function overloading in PowerShell Well, you can overload it from C# code in this manner:

I want to overload the * operator in python. In C++, you can overload the dereference operator, so that you can create a class with a custom way to respond to *alpha . Part of this question is that I don't know exactly, and I mean EXACTLY, what the * operator (unpacking operator as I call it) does. So how can I overload it, or emulate the overloading of it. Eventually I want to be able to do: *alpha with a custom response and return value. EDIT: I found the solution thanks to Joe Kington's comment. As *alpha unpacks according to __iter__ , so I defined a simple class that can be inherited from