C# 4 and .NET 4

esource Management ❘ OC179
public:
virtual void Foo() override
{
Base::Foo();
}
virtual void Bar() override
{
}
};
code snippet CPPCLI/InheritanceDemo.h
' Visual Basic
Public MustInherit Class Base
Public Overridable Sub Foo()
End Sub
Public MustOverride Sub Bar()
End Class
Public class Derived
Inherits Base
Public Overrides Sub Foo()
MyBase.Foo()
End Sub
Public Overrides Sub Bar()
End Sub
End Class
code snippet VisualBasic/InheritanceDemo.vb
// F#
[]
type Base() as this =
abstract Foo : unit -> unit
default this.Foo() = printfn "Base.Foo"
abstract Bar : unit -> unit
type Derived() as this =
inherit Base()
override this.Foo() =
base.Foo()
printfn "Derived.Foo"
override this.Bar() = printfn "Derived.Bar"
code snippet FSharp/InheritanceDemo.fs
tesourCe managemenT
Working with resources is covered in Chapter 13, “Memory Management and Pointers,” both implementing
the IDisposable interface and implementing a finalizer. How this looks in C++/CLI, Visual Basic, and F#
is covered in this section.
idisposable interface implementation
For freeing resources, the interface IDisposable defines the Dispose() method. Using C#, Visual Basic,
and F# you have to implement the interface IDisposable. With C++/CLI the interface IDisposable is
implemented as well, but this is done by the compiler if you just write a destructor:
// C#
public class Resource: IDisposable
{
public void Dispose()
{
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