[openbeos] Re: Properties in GCC ?
- From: Michael Noisternig <michael.noisternig@xxxxxxxxx>
- To: OpenBeOS List <openbeos@xxxxxxxxxxxxx>
- Date: Sat, 9 Feb 2002 00:56:09 +0100
"Steve Vallee" <svallee@xxxxxxxxxxxxxx> wrote on 08.02.02 23:42:04:
>
>> What a poor solution! This is a much nicer one:
>> int &property() { return mProperty; }
>> So you can do
>> x = property();
>> and
>> property() = x;
>
>
>Oups ! In my previous mail I forgot to tell that your exemple doesn't work
>for what I'm searching for. Let's stick with the Width property example.
>
>- You have a private variable that contain the value ( fWidth )
>- You have a SetWidth( int ) function that set the value, do some error
>checking, and redraw the object on screen.
>
>Then you can have a property like this :
>
>_property Width = { read = fWidth, write = SetWidth };
>
>So :
>
>Width = x; // equal SetWidth(x);
>x = Width; // equal x = fWidth; (bypassing the private nature)
>
>
>- Steve
Granted, the above solution is of limited use, also because you often don't
return the same type you work with internally. It
was just a
reaction to the simple "int property() { return int }" example.
Michael Noisternig
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