Understanding a small UML representation of interfaces, class and inheritance??

I need to implement this UML in code. Can someone help me understand 2 questions about this UML representation? This...

What's the difference between integer class and numeric class in R?

I want to preface this by saying I'm an absolute programming beginner, so please excuse how basic this question is. ...

What's the difference between integer class and numeric class in R?

I want to preface this by saying I'm an absolute programming beginner, so please excuse how basic this question is. ...

passing object by reference in C++?

The usual way to pass a variable by reference in C++(also C) is as follows: void _someFunction(dataType *name){ // ...

Dynamic class in Angular.js?

I want to dynamically add a css class to an <li> element I am looping over. The loop is like this: <li ng-...

Java Program - The Card Game WAR?

This is a class assignment, I am not asking for anyone to DO the assignment for me but rather I have attempted to my...

Define a struct inside a class in C++?

Can someone give me an example about how to define a new type of struct in a class in C++. Thanks. ...