[Lazarus] 'with' is evil, isn't it?

[Sven Barth]

Am 02.08.2011 16:38, schrieb Max Vlasov:
> Hi,
>
> Personally I stopped using 'with' keyword long time ago, but there are
> code fragments from the past and today I fixed a little bug showing
> again that it's a evil. TCanvas in lazarus has width and height
> properties while in Delphi it hasn't (at least some time ago). So the
> code below leads to different results in lazarus and Delphi, at least
> for design-time drawing.
>
> procedure TControlDescendant.Paint;
> begin
>    with Canvas do
>    begin
>        Rectangle(0, 0, Width, Height);
>    edn;
> end;
>
> So not only the 'with' context can silently change while the project is
> evolving, it can also change while it's being ported...

I personally consider "with" as a statement of the category "from great 
power comes great responsibility" and thus "handle with care". 
"absolute" is another example of such a construct (and I like to use it 
in event handlers that have "TObject" as sender ^^).

Regards,
Sven