[Gambas-user] collection syntax difficulty

[richard terry]

On Wed, 10 Jun 2009 03:46:45 am Jussi Lahtinen wrote:
> I'm not sure what you mean.
> In collections, why order of elements matter?
> Maybe instead, you need to use Object[] data type?

I'm  using collections of collections and in some situations I may have only 
one collection in the collections, so I just wanted reference it directory by 
using the collection.key which won't work unless it is enumerated.

Regards

richard

>
>
> This doesn't work;
>
> MyCollection[999]
>
> however, these works;
>
> MyCollection["999"]
>
> and
>
> Dim ii as Integer = 999
> MyCollection[ii]
>
> So, you don't have to convert variables to string. At least if you use
> binary collections...
>
>
> Jussi
>
> 2009/6/9 Ricardo Díaz Martín <oceanosoftlapalma at ...626...>:
> > Maybe the problem is key in collection are String and you are using
> > MyCollection(999).
> >
> > Try:
> >
> > MyCollection("999")
> >
> > to get reference to this element. In adition, when you are adding
> > elements to MyCollection, convert the key to string
> > (MyCollection.Add(element, CString(ElementKey))
> >
> > regards
> > Ricardo
> >
> > -----Mensaje original-----
> > De: richard terry <rterry at ...1946...>
> > Reply-to: richard terry <rterry at ...1946...>, mailing list for gambas
> > users <gambas-user at lists.sourceforge.net>
> > Para: mailing list for gambas users <gambas-user at lists.sourceforge.net>
> > Asunto: [Gambas-user] collection syntax difficulty
> > Fecha: Tue, 9 Jun 2009 20:39:17 +1000
> >
> >
> > Gambas DOC: Returns the key of the last read or last enumerated element.
> >
> >
> > I'm having problem reading the key of a collection with collection.key. I
> > guess gambas is behaving as gambas says it will, however it would be nice
> > to be able to get the first key in a collection without having to iterate
> > through it (ie having the default action of  collection.key to return the
> > first key).
> >
> > Lets say I have a collection called myCollection which I've loaded with
> > database information keyed on the primary key of the table.
> >
> > Mycollection(999)
> >
> > If try and get the key of this by this syntax:
> >        print Mycollection.key
> > then the key is null
> >
> > If I do either
> >        With Mycollection
> >                print Mycollection.key
> >        next
> > or
> >
> > For each Mycollection
> >        print Mycollection.key
> > next
> >
> > then it prints the key (here 999)
> >
> > So my question, short of iterating through a collection (even if only one
> > member) is there no way to get the key of the collection? Docs I guess
> > say not, is this fixable/changeable?
> >
> > Richard
> >
> >
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