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From: "Samuel T. Harris" <samuel_t_harris@Raytheon.com>
Subject: Re: Ada programming with Equality, Copy and Print Functions
Date: 2000/09/26
Message-ID: <39D0B434.9B17CDA7@Raytheon.com>#1/1
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Organization: Raytheon Aerospace Engineering Services
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Newsgroups: comp.lang.ada
Date: 2000-09-26T00:00:00+00:00
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wolfpack69@my-deja.com wrote:
> 
> Hey, I was recommended to come here for some help with this problem i face.
> Here it is:
> 
> The stack pacakges, Static and Dynamic, provide Stack_Type as limited private
> type. Therefore i cannot use assignment or test for equality/inequality on
> objects of type stack_type in the application program. The procedures i have
> worked out below, can only operate on stack objects through the operations
> provided by the ADT package.
> 
> PROCEDURES:  procedure Equal(Stack_1 : in out Stack_Type,  Stack_2 : in out
> Stack_Type,  Stacks_equal : out Boolean);
> 
>   procedure Copy(Target_Stack : in out Stack_Type,  Source_Stack : in out
> Stack_Type);
> 
>   procedure Print_Stack(A_Stack : in out Stack_Type);
> 
> I believe these procedures are correct. I am also told that they are to work
> with both static and dynamic stacks, but only test with dynamic stack ADT.
> 
> The procedures will nned to change the state of stack(I believe this can be
> done using Pop to remove a stack item). There will also be a temporary stack
> that will be needed, where appropriate, so that the stack data can be stored
> and ensure that the stacks are returned to original state.
> 
> I hope the information is sufficient enough for you to help me with.

A classic case of a reusable component missing something.
Instead of simply adding these facilities to the component
itself, one must manhandle objects outside the component!

Oh the humanity!

-- 
Samuel T. Harris, Principal Engineer
Raytheon, Aerospace Engineering Services
"If you can make it, We can fake it!"