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How to use template inheritance in a class?
The class allows a name (string) to be prepended to any class, with the proviso that the base class (the template parameter) supports the member function display (). In this example we have constructed a normal class, Waypoint, which supports the display () method (presumably, this displays the current coordinates of the Waypoint; but who knows…).
Which is the last object destroyed in virtual inheritance?
In other words, the virtual base class will be the last object destroyed, because it is the first object that is fully constructed. A powerful technique that arises from using virtual inheritance is to delegate a method from a class in another class by using a common abstract base class. This is also called cross delegation.
Which is an example of a multiple inheritance problem?
One of the problems that arises due to multiple inheritance is the diamond problem. A classical illustration of this is given by Bjarne Stroustrup (the creator of C++) in the following example:
What is the diamond problem in multiple inheritance?
One of the problems that arises due to multiple inheritance is the diamond problem. Since both transmitter and receiver classes are using the method write () from the base class, when calling the method write () from a radio object the call is ambiguous; the compiler can’t know which implementation of write ()…
How to inherit from a template in C + +?
You have a template Rectangle from which you can get a class Rectangle which derives from Area , and a different class Rectangle which derives from Area . It may be that you want to have a single type Rectangle so that you can pass all sorts of Rectangle to the same function (which itself doesn’t need to know the Area type).
Can a rectangle be generated from a template?
However you have to specify which classed to derive from when you define Rectangle. This is true no matter whether those classes are generated from a template or not. Two objects of the same class simply cannot have different inheritance hierarchies. What you can do is to make Rectangle a template as well.
Can a class be derived from a template class?
Note that those are completely different classes, which have nothing in common except for the fact that they were generated from the same class template. Since Area is not a class, you cannot derive the class Rectangle from it. You only can derive a class from another class (or several of them).