Re: [boost] Utility for get/set member functions

From: Aaron Linnen (linnena_at_[hidden])
Date: 2002-05-13 11:58:20

Dragan Milenkovic wrote:

[snip]

> And now to get on with my nonsense... I wanted to create some
> utilities for get/set member functions. I was wondering why this has
> not found its place in the boost libraries.
>

[snip]

> I have considered something like this:
>
> class Foo {
> public:
>     Member  x;
>
>     Foo() : x(this, &Foo::get_x, &Foo::set_x) {}
>
> private:           // or protected
>     int  get_x();  // and have these virtual
>     void set_x(int);
> };
>

[snip]

Borland's C++ Builder compiler has this feature, and it's handy. Their syntax:
class Foo {
public:
    __property TRect Bounds = {read = FBounds, write = SetBounds};
    __property int Width = {read=FWidth};
private:
    int FWidth;
    TRect FBounds;
    void SetBounds(TRect R);
}
You can use the variables directly (e.g. to read the FBounds above), or a function
(the SetBounds). If either read or write isn't specified, the property becomes
write only or read only. In the second example, Width becomes a read only access
to the FWidth private member.

Of course, Borland has the option of compiler extensions, while boost doesn't.
Aaron