[Gambas-user] Struct with Array Field

[Jussi Lahtinen]

Only reason to use structure is when you need to pass it to an external
function not written in Gambas. Otherwise, don't use it.
I'm quite sure you can write a function that automates the "someArray = New
someClass" task with static methods of the Class & Object classes, but
honestly I don't think there is much use for it. The problem is in
somewhere else.

Jussi

On Sat, Apr 8, 2023 at 9:12 PM Mayost Sharon <sharon at 455.co.il> wrote:

>
> ---------- Original Message -----------
> From: T Lee Davidson <t.lee.davidson at gmail.com>
> To: user at lists.gambas-basic.org
> Sent: Fri, 7 Apr 2023 13:08:35 -0400
> Subject: Re: [Gambas-user] Struct with Array Field
>
> > On 4/6/23 17:45, Jussi Lahtinen wrote:
> > >
> > >      > In c terms which structure are interface for, strings and
> arrays are just pointer that are not initialized to a value until
> > >      > something is assigned to them.
> > >      >
> > >      > When you do a  mstrct = new mystruct it creates the structure
> with null pointers for those fields.
> > >
> > [snip]
> > >
> > > The topic was *objects *inside structure. They have only null
> pointers. Variables are valid without further actions.
> > > C does not have "new", but he was referring to the similar things that
> need to be done in C.
> > >
> > > Jussi
> >
> > Yes, the original topic was arrays (objects) in a structure. To help
> clarify
> > for the OP, I gave examples of what did or did not need to be explicitly
> > initialized in a structure. Brian's response was to make a false
> statement
> > which, to help prevent confusion, needed to be corrected.
> >
> > The statement, "When you do a  mstrct = new mystruct it creates the
> structure
> > with null pointers for those fields," does not refer to what happens in
> C. And,
> >  "those fields," obviously refers to "strings and arrays". As I
> explained, the
> > strings would be automatically initialized, but the arrays would not.
> >
> > Is there anything incorrect about the following statement?
> > Simple native datatypes (such as String, Integer, Boolean) will be
> > automatically initialized. But, objects (such as String[], Integer[],
> >  Boolean[]), which are objects of classes and have properties and
> methods,
> > must be initialized with the NEW keyword.
> >
> > --
> > Lee
> >
> > ----[ http://gambaswiki.org/wiki/doc/netiquette ]----
> ------- End of Original Message -------
>
> If I have a structure that contains many array variables, etc.
> If I need to do NEW on every variable that is an array
> Why do I need it inside the structure?
> Is there a way in NEW once to execute on all variables?
>
> Thanks
>
> ----[ http://gambaswiki.org/wiki/doc/netiquette ]----
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.gambas-basic.org/pipermail/user/attachments/20230409/20fa8e09/attachment.htm>