implements and inherits

Question

User-1982615125 posted

hi

how do you use the two. it seems to me that implements only adds placeholders for methods?

for example i would like to add functionality while keeping the class clean

such as:

class player
implements canwalkaround
implements candie
implements canshoot
end class

in my case it adds all those methods to my class and it still doesnt use its pre-written code.

Answer 1

User475983607 posted

Simple, Interfaces do not have an implementation.  The programer must implement an interface.

Use inheritance to take advantage of existing code functionality.

See the C# programming guide.

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/interfaces/

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/inheritance

Answer 2

User753101303 posted

Hi,

What do you call a "clean" class? My understanding is that you want to just see basic  methods and want to use casting to call specialized options ie :

        Dim p = New Player()
        'p.Die() 'Doesn' compile
        CType(p, ICanDie).Die()

Answer 3

User-1982615125 posted

you cant inherit multiple functionality

Answer 4

User475983607 posted

fazioliamboina

you cant inherit multiple functionality

Correct, a class can inherit from one class.  However, inheritance can be chained.

Can you explain the problem you are trying to solve rather than how you think the problem should be solved?  It sounds like you might have a design issue.