Re: [Vala] Personal iterable, collection, list classes

[Daniel Lucraft <dan fluentradical com>]

Hi Alessandro,

because you are wrapping an already iterable object
(your 'objects' property) you can do this very simply
by returning the iterator for that collection:

public class MyList : Object, Iterable<MyObject> {
  protected ArrayList<MyObject> objects;

  public Type get_element_type () {
    return typeof (MyObject);
  }

  public Gee.Iterator<MyObject> iterator () {
    return objects.iterator();
  }
}

...

foreach(MyObject m in my_list) {
  ...
}

best,
Dan


--- Alessandro Pellizzari <alex amiran it> wrote:

> Hi all,
> 
> I would like to create a couple of classes and use
> them as collections.
> For example:
> 
> public class MyList()
> {
>  protected List<MyObject> objects = new
> ArrayList<MyObject>;
>  ...
> }
> 
> public class MyObject()
> {
>  protected string mydata;
> }
> 
> 
> And I would like to code like this:
> 
> var l = new MyList();
> l.populate(blah blah);
> foreach(MyObject o in l) {
>  printf(o.getData());
> }
> 
> 
> First of all: is it possible?
> And, if yes, how? :)
> What classes/interfaces should I inherit from?
> 
> Thank you very much.
> 
> -- 
> Alessandro Pellizzari
> 
> 
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