[fpc-devel] "Blank slate" next version of FPC
Dimitrios Chr. Ioannidis
d.ioannidis at nephelae.eu
Wed Feb 20 16:24:19 CET 2019
Hi,
Στις 20/2/2019 4:46 μ.μ., ο Paul van Helden έγραψε:
> On Wed, Feb 20, 2019 at 4:35 PM Dimitrios Chr. Ioannidis via fpc-devel
> <fpc-devel at lists.freepascal.org
> <mailto:fpc-devel at lists.freepascal.org>> wrote:
>
> Even if declaring variables as close as possible to where the
> variable will be used ( debugging wise not readability wise )
> leads to more correct code, the problem is to avoid the temptation
> to use them in other places too.
>
> Variables declared within a begin...end cannot be used elsewhere.
> (E.g. for var I:=0 to .. won't let you use I after the loop).
>
> AFAIK, one of Pascal's primary design goals is to won't let you
> shoot yourself in the foot, and IMO that feature is not in that
> direction.
>
> I'd like to see an example how this is less safe.
Well one of the answer in the Cantu blog has this ( which I changed to
lets say a "real world" relative big function ) :
var arr: array...
function Fuckup: boolean;
var I: Integer;
begin
<....> 20 lines of code
for var I := Low(arr) to High(arr) do
if arr[I]..... then
break;
<....> 20 lines of code
Result := (I <= High(arr));
end;
regards,
--
Dimitrios Chr. Ioannidis
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