[Gambas-user] String array empty after SUB (Gambas 2)

[Rolf-Werner Eilert]

Am 22.02.2012 20:26, schrieb GMail:
> On Wed, 2012-02-22 at 19:49 +0200, Jussi Lahtinen wrote:
>> Just quick thought... maybe this "felder = feld.Copy()" gives new object
>> reference feld to felder.
>> And because feld is declared locally, the it is null after the sub and so
>> is also felder.
>>
>> Perhaps you need to do "felder = feld.Copy()" manually with for each...
>>
>> Jussi
>>
>>
>>
>>
>> On Wed, Feb 22, 2012 at 18:41, Rolf-Werner Eilert<
>> eilert-sprachen at ...221...>  wrote:
>>
>>> Now, this is a strange one :-) and I really have no idea what goes wrong
>>> here.
>>>
>>> I've got a dialog which loads a list of names. I'm keeping such SUBs
>>> that deal with files in a module called ldsv (brief for load-save).
>>>
>>> The dialog's part is simple, "ls" is the listbox:
>>>
>>> PRIVATE felder AS NEW String[]
>>>
>>> PUBLIC SUB ls_Click()
>>>
>>>
>>>    Label1.Text = "Nr. "&  schlyssel[ls.Index]&  ": "&  ls[ls.Index].Text
>>> 'here we jump into the SUB:
>>>    ldsv.ListeKundeFelder(schlyssel[ls.Index], felder)
>>> 'now we should see the number of fields loaded:
>>>    lblTitel.Text = CStr(felder.Count)
>>>
>>> END
>>>
>>>
>>> Now the SUB in module ldsv:
>>>
>>> PUBLIC SUB ListeKundeFelder(schlysselnr AS String, felder AS String[])
>>> DIM t$ AS String
>>> DIM feld AS NEW String[]
>>>
>>>    felder.Clear
>>>
>>>    t$ = File.Load(pfadKunden&/ schlysselnr&  ".kunde")
>>>    t$ = Tag2Str(t$)
>>>
>>>    feld = Split(t$, Chr$(10))
>>>
>>>    IF feld[0] = "#!Stein3.1" THEN
>>>      feld.Delete(0, 2)               'das #! und die ID können weg
>>>      felder = feld.Copy()
>>>    END IF
>>>
>>> END
> Perhaps ... If feld[0]<>  "#!Stein3.1" then felder=feld.Copy is never
> executed! Try
>
>    IF feld[0] = "#!Stein3.1" THEN
>      feld.Delete(0, 2)               'das #! und die ID können weg
>    END IF
>    felder = feld.Copy()
>

This was my first thought, too. But when I checked the values at the 
time of END IF, everything was as expected. Jussi had the right idea: 
the problem is the .Copy itself. Maybe we should mention this in the 
docs, within the text for .Copy for instance.

Rolf