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

Dragan Milenkovic wrote:


> 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.


> 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);
> };


Borland's C++ Builder compiler has this feature, and it's handy. Their syntax:
class Foo {
    __property TRect Bounds = {read = FBounds, write = SetBounds};
    __property int Width = {read=FWidth};
    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.

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