Operator overloading in Java
Please can you tell me if it is possible to overload operators in Java? If it is used anywhere in Java could you please tell me about it. 10 Answers 10
Please can you tell me if it is possible to overload operators in Java? If it is used anywhere in Java could you please tell me about it. 10 Answers 10
If I am creating my own class in Python, what function should I define so as to allow the use of the in operator, e.g. class MyClass(object): … m = MyClass() if 54 in m: … 3 Answers 3
I am writing a small matrix library in C++ for matrix operations. However my compiler complains, where before it did not. This code was left on a shelf for 6 months and in between I upgraded my computer from debian etch to lenny (g++ (Debian 4.3.2-1.1) 4.3.2 ) however I have the same problem on … Read more
DataGridView, for example, lets you do this: DataGridView dgv = …; DataGridViewCell cell = dgv[1,5]; but for the life of me I can’t find the documentation on the index/square-bracket operator. What do they call it? Where is it implemented? Can it throw? How can I do the same thing in my own classes? ETA: Thanks … Read more
I’m learning about operator overloading in C++, and I see that == and != are simply some special functions which can be customized for user-defined types. My concern is, though, why are there two separate definitions needed? I thought that if a == b is true, then a != b is automatically false, and vice … Read more
What is the name of the method to override the [] operator (subscript notation) for a class in Python? 3 Answers 3
This question already has an answer here: Resolving ambiguous overload on function pointer and std::function for a lambda using + (unary plus) (1 answer) Closed 8 years ago. In Stack Overflow question Redefining lambdas not allowed in C++11, why?, a small program was given that does not compile: int main() { auto test = []{}; … Read more
This question already has answers here: How do I overload the square-bracket operator in C#? (8 answers) Closed 8 years ago. I would like to add an operator to a class. I currently have a GetValue() method that I would like to replace with an [] operator. class A { private List<int> values = new … Read more
Let’s say I have a class that has a member called data which is a list. I want to be able to initialize the class with, for example, a filename (which contains data to initialize the list) or with an actual list. What’s your technique for doing this? Do you just check the type by … Read more
Coming from C++ to Java, the obvious unanswered question is why didn’t Java include operator overloading? Isn’t Complex a, b, c; a = b + c; much simpler than Complex a, b, c; a = b.add(c);? Is there a known reason for this, valid arguments for not allowing operator overloading? Is the reason arbitrary, or … Read more