[Gambas-user] collection syntax difficulty

[Jussi Lahtinen]

I'm not sure what you mean.
In collections, why order of elements matter?
Maybe instead, you need to use Object[] data type?


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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