Re: Efficiently setting up large quantities of constant data

[Stephen Leake <stephen_leake@acm.org>]

gate02@wrandyke.demon.co.uk (Michael Mounteney) writes:

> I want to set up about 100 variables which somehow reference
> variable-length arrays of other things.  The other things, for a given
> variable, are fixed.  Simplifying:
> 
>      type component is
>           record
>                X : character;
>           end record;
> 
>      type component_list is array (positive range <>) of component;
> 
>      type component_ref is access all component_list;
> 
>      type structure is
>           record
>                part : component_ref;
>           end record;
> 
> So I will have lots of structures scattered about, which will be
> completely constant.  I would like to enforce this constancy, but Ada
> (as far as I know) does not (unlike C++;  that should get some hackles
> rising) allow `constant' to be splashed about in type definitions. 

Yes it does; any object, and any pointer to object, can be declared
constant. 

Please show an actual object that you attempted to declare as
constant, but where unable to.

-- 
-- Stephe