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From: =?ISO-8859-1?Q?S=E9bastien?= <seb.morand@gmail.com>
Newsgroups: comp.lang.ada
Subject: Ada.Containers.Vectors Update_Element issue
Date: Tue, 13 May 2008 17:26:40 +0000
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Date: 2008-05-13T17:26:40+00:00
List-Id: <comp.lang.ada>

Hi,

I'm trying to use the Ada.Containers.Vectors librairies, but I don't 
know how to update element using a context.

I have a list of element and I want to use Update_Element with a 
procecedure Update_Element_Process, however I want to add static 
argument to the Update_Element_Process.

This could be something like :

procedure My_Update(c: in out context; Element: in out Element_Type);

and then

procedure Update_All(c: in out context) is
begin
	my_list.Update_Element(1, My_Update'Access);
end;

Because My_Update is not exacly the type Update_Element_Process it's nor 
working.

type Update_Element_Process is
    access procedure (Element : in out Element_Type);

Note that generic doesn't help : they give me a bug error compilation 
because of Address invalid of the generic instance.

I tried this:
generic
   c: Context;
procedure My_Update_Generic(Element: in out Element_Type);

procedure Update_All(c: in out context) is
   procedure My_Update is new My_Update_Generic(c => c);
begin
	my_list.Update_Element(1, My_Update'Access);
end;

That's not working and I can understand it ;-) No dynamical address 
since the generic will instancied at runtime or something like that ...

Thanks by advance if you have any clue to update a vector list using 
this way (because I could : get element, then update, then replace, but 
it's going to be really slower ...)

S�bastien