I am trying to understand the difference between __getattr__ and __getattribute__, however, I am failing at it. The answer to the Stack Overflow question Difference between __getattr__ vs __getattribute__ says: __getattribute__ is invoked before looking at the actual attributes on the object, and so can be tricky to implement correctly. You can end up in … Read more
I have been reading through the C++ FAQ and was curious about the friend declaration. I personally have never used it, however I am interested in exploring the language. What is a good example of using friend? Reading the FAQ a bit longer I like the idea of the << >> operator overloading and adding … Read more
What is the precise difference between encapsulation and abstraction? 40 Answers 40 Most answers here focus on OOP but encapsulation begins much earlier: Every function is an encapsulation; in pseudocode: point x = { 1, 4 } point y = { 23, 42 } numeric d = distance(x, y) Here, distance encapsulates the calculation of … Read more
Python gives us the ability to create ‘private’ methods and variables within a class by prepending double underscores to the name, like this: __myPrivateMethod(). How, then, can one explain this >>>> class MyClass: … def myPublicMethod(self): … print ‘public method’ … def __myPrivateMethod(self): … print ‘this is private!!’ … >>> obj = MyClass() >>> obj.myPublicMethod() … Read more
What is the difference between public, private, and protected inheritance in C++? All of the questions I’ve found on SO deal with specific cases. 16 s 16 class A { public: int x; protected: int y; private: int z; }; class B : public A { // x is public // y is protected // … Read more
