Re: How to instantiate `ptr object`

[dataPulverizer]

I just wasn't sure whether when allocating for objects you have to account for 
any "gubbings", just cautious I guess:
    
    
    type
      MyTypeA = ptr object of RootObj
        x: int64
      MyTypeB = ptr object of RootObj
        x: array[0..4, int64]
    
    
    var x0 = alloc(sizeof(int64));
    var x1 = cast[MyTypeA](x0);
    x1.x = 42;
    
    echo "x: ", x1.x;
    dealloc(x1); # or dealloc(x0)
    
    var y0 = alloc(sizeof(int64)*5);
    var y1 = cast[MyTypeB](y0);
    
    y1.x = [1'i64, 2, 3, 4, 5];
    echo "y1: ", y1.x;
    dealloc(y1); # or dealloc(y0)
    
    
    Run

I've now added your book to my Nim reading list. Thanks