var trait={
    get:func {return me.val;},
    set:func(x) {me.val=x;}
};

var class={
    new:func() {
        return {
            val:nil,
            parents:[trait]
        };
    }
};

var class2={
    new:func() {
        return {
            val:nil,
            parents:[trait],
            set:func(x) {me.val=typeof(x);}
        };
    }
};

var class_obj=[];
for (var i=0;i<10;i+=1) {
    append(class_obj,class.new());
    class_obj[i].set(i);
}
for (var i=0;i<10;i+=1) {
    append(class_obj,class2.new());
    class_obj[10+i].set(i);
}

foreach(var object;class_obj) {
    println(object.get(),' ',keys(object));
}