Re: Is there a keyword to access the base class

[Stephen Jones]

On Tuesday, 18 June 2013 at 22:15:51 UTC, Ali Çehreli wrote:

On 06/18/2013 03:10 PM, Stephen Jones wrote:

I am trying to do this:

import std.stdio;
import std.conv;

class Bar{
}

class Foo : Bar{
    int val = 10;
}
class Foos : Bar{
    int val = 20;
    string str = "some more memory";
}

void main(){
    Bar[] bars;

    bars ~= new Foo();
    bars ~= new Foos();

    foreach(Bar b; bars){

//writeln(b.val);//error: no property 'val' for type 'mod.Bar'

    }

    writeln(to!(Foo)(bars[0]).val);//works
}

The problem is that I have to cast each Bar instance to its base class (Foo, Foos) before the compiler recognizes the val variable. Is there some syntax or keyword to allow me to specify that the b in the foreach loop refers to the base class not the super, such as writeln(b.base.val);

I know I can cast, but how do I know what base class each b in the

foreach loop is?

val() must appear on Bar. I made it an interface:

interface Bar{
    int val();
}

class Foo : Bar{
    int val_ = 10;

    int val() {
        return val_;
    }
}
class Foos : Bar{
    int val_ = 20;
    string str = "some more memory";

    int val() {
        return val_;
    }
}

Ali

Thanks Ali