Re: limited types (Was: Records that could be arrays)


Dmitry A. Kazakov wrote:

1. Passing as a parameter

Just pass a cursor:

procedure Op (C : in out Container_Type) is
begin
Do_Something (C.First);
...
end;

You know you've run out of elements when Has_Element returns False.


2. Copying

while (Has_Element (C) loop
Put_Element_Somewhere (Element (C);
end loop;

3. Merging

You'll need to define a relational operator over your element type, but
then you can say:

Merge (C1.First, C2.First);


4. Slicing

Just use a cursor pair:

Do_Something (C1, C2); -- half-open range


5. Closures and simultaneous traversal of two or more containers

Do_Something (C1, C2);


6. Relational operations on sets of containers

Compare (C1, C2);


If you don't understand this, go to

http://charles.tigris.org

and browse the Charles.Algorithms subsystem. (Things are a little
different for the Ada 2005 container library, but it should give you
the general idea.)

.

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