* classes and pointers
2000-12-17 3:37 classes and pointers Ory Segal
@ 2000-12-16 18:23 ` tmoran
2000-12-16 18:57 ` Ehud Lamm
0 siblings, 1 reply; 3+ messages in thread
From: tmoran @ 2000-12-16 18:23 UTC (permalink / raw)
>a) Pointer.all.do1
Try a procedure call do1(Pointer.all); just as you would do1(x);
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: classes and pointers
2000-12-16 18:23 ` tmoran
@ 2000-12-16 18:57 ` Ehud Lamm
0 siblings, 0 replies; 3+ messages in thread
From: Ehud Lamm @ 2000-12-16 18:57 UTC (permalink / raw)
<tmoran@acm.org> wrote in message
news:YqO_5.35915$M5.1372656@news1.frmt1.sfba.home.com...
> >a) Pointer.all.do1
> Try a procedure call do1(Pointer.all); just as you would do1(x);
Which should be obvious, since somewhere you must also allocate the memory
(use "new").
--
Ehud Lamm mslamm@mscc.huji.ac.il
^ permalink raw reply [flat|nested] 3+ messages in thread
* classes and pointers
@ 2000-12-17 3:37 Ory Segal
2000-12-16 18:23 ` tmoran
0 siblings, 1 reply; 3+ messages in thread
From: Ory Segal @ 2000-12-17 3:37 UTC (permalink / raw)
Hi , can somebody please check what's wrong with my hierarchy/classes :
base_package:
type base_type is abstract tagged record
a : sometype;
b : sometype;
end record;
procedure do1(A : base_type) is abstract;
procedure do2(A : base_type) is abstract;
end base_package
****************************************
Then I have the typePackage :
type type1 is new base_package.base_type with
record
c : sometype;
d: sometype;
end record;
type type2 is new base_package.base_type with
record
e: sometype;
f : sometype;
end record;
Now , here comes implementations of do1 , do2 for both types type1,type2;
now the main progrem has "with" clause for both typePackage , base_package;
and I can create instances and fill them with values , BUT , if I want to
create a pointer (in main)
like this :
type TypePtr is access base_type'class
Pointer : TypePtr;
and then I try to call a function for that pointer , I can't seem to get the
procedures to be recognized.
how do I call the procedure ? do I use :
a) Pointer.all.do1
b) Pointer.do1
or what ? nothing works....
thank you.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2000-12-17 3:37 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2000-12-17 3:37 classes and pointers Ory Segal
2000-12-16 18:23 ` tmoran
2000-12-16 18:57 ` Ehud Lamm
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox