Re: Localized Variable Declaration

[Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov>]

David Rasmussen <pinkfloydhomer@yahoo.com> writes:

> >
> > use 'declare' e.g.
> > procedure Blah is
> > begin  -- Blah
> >    if Some_Function then
> >       declare
> >          Local_Variable : Integer; -- only visible within the block
> >       begin
> >          -- Do something with Local_Variable
> >       end;
> >    else
> >    end if;
> > end Blah;
> >
> 
> Oh sure, but that is pretty tedious, compared to just a one line
> variable declation. 

But the generated code is the same. Remember, Ada favors readability
over writeability. In this case, the 'declare' makes it _very_ clear
that you are starting a new block. That's _implied_ in C.

> The point is, to be a bit extreme, that centralized variable
> declations (e.g. at the "beginning" of the function) as done in C
> and Pascal, are evil. Variables should be declared close to where
> they are needed, IMO.

Yep. That's what declare is for.

Just because you don't like the answer, doesn't mean it isn't The
Answer :).

-- 
-- Stephe