Re: Ada 2005,Doubly_Linked_List with Controlled parameter

["Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>]

On 04/04/2016 08:00 PM, George J wrote:
 >
 > Ok,thanks,and if I correctly understood,if I have record with 
multiple parameters, i must do it like
 > ---------------------------------
 >  type Info_Record is
 >     Name:Unbounded_String;--ok
 >     Surname:Unbounded_String;
 >     Age:Natural;
 >  end Info_Record;
 > --------------------------------
 > Am I right?
 > And are they normally will be deleted from memory with finalization 
of Doubly_Connected_List?

Yes. Your example, with only a single string, appeared to be an attempt 
to reinvent Unbounded_String, but if you need a type with multiple such 
values, this is a way to do it.

"The type Unbounded_String needs finalization (see 7.6)." and "No 
storage associated with an Unbounded_String object shall be lost upon 
assignment or scope exit." ARM A.4.5

(http://www.adaic.org/resources/add_content/standards/05rm/html/RM-A-4-5.html).

But I see you've discovered that already.

(Some on here dislike Unbounded_String, but if it serves your purposes 
you should ignore them and use it. I worked on a large, soft-real-time 
system that used Unbounded_String extensively without problem, so such 
people's concerns seem to be unfounded.)

-- 
Jeff Carter
"Hold your temper. Count ten.... Now let 'er go.
You got a good aim."
Never Give a Sucker an Even Break
105