Re: Renaming vs assignment to constant

[adambeneschan@gmail.com]

On Friday, December 6, 2013 5:04:18 PM UTC-8, Shark8 wrote:
> On Friday, December 6, 2013 4:48:41 PM UTC-7, adambe...@gmail.com wrote:
> 
> > 
> 
> > > I think the big difference happens when the result has subcomponents:
> 
> > >     ch   : constant Character:= 'X';             -- Character X.
> > >     temp : String  renames Character'Image(ch);  -- Its image: 'X'.
> > >     ch2  : Character renames temp(2);            -- The unquoted character.
> 
> Size of Ch:    Assuming 8.
> Size of temp:  24 + Bounds(assuming 64).
> Size of Ch2:   None, it's a reference-to/alias-of Temp(2).
> 
> Total 96 bits.
> 
> 
> > What is the big difference between that and
> >     ch   : constant Character:= 'X';                -- Character X.
> >     temp : constant String := Character'Image(ch);  -- Its image: 'X'.
> >     ch2  : constant Character := temp(2);           -- The unquoted character.

Ummm, no, you changed it.  I kept the "renames" in the declaration of ch2; I only changed the declaration of "temp" from your earlier post.  Since this thread is about the difference is declaring an object that renames a function result, and declaring a constant object that's assigned to a function result, I think discussing a rename of a subcomponent is off-topic for this thread.

                               -- Adam