Nah,
I just get curious and it pays to know your tools. Why all the questions -
are you having a slow day?
As for debugging - breakpoints etc do support groups so you can turn on/off
sets of breakpoints.
However with regard to exceptions, I use them a lot and quite often have as
many exception classes as I do actual useful classes (or more). When you are
writing server side code a lot, it's one method of getting a lot of useful
information quickly (and you can turn them off if required when they are
fine grained).
> if Query.FindField('col1') <> nil then Query.FindField('col1').AsString :=
>'blah'
>
I agree really bad code (in Delphi) - would be okay if the Delphi compiler
was really good at optimisation - maybe this kind of code is written by ex
C++ developers??
Myles
var
f: TField;
f := Query.FindField('col1');
if assigned(f) then f.AsString := 'blah';
which is more efficient for the allocation of 1 pointer
or should we just
try
Query.FindField('col1').AsString := 'blah'
except
end
I agree on the debugging thing, its a pain it would be good if you could
ingore
handled exceptions per block of code not globally, I'd use try/excepts more
It looks like im into traversing object properties still :-)
Neven
----- Original Message -----
From: "Myles Penlington" <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Friday, November 02, 2001 3:22 PM
Subject: RE: [DUG]: Best practice - To except or not
> Assigned() generates identical code to <> nil, and not Assigned()
generates
> identical code to = nil.
> So take your pick.
>
> Myself - I prefer to use Assigned() - treat it as an inlined compiler
> function - same applies to Pred(), Succ(), Inc() and Dec().
>
> What really gets to me with Succ() and Pred() (Sometimes!) is that for
> enumeration types they do not wrap around - because they generate
identical
> code to Inc() and Dec()!!!!!
>
> Myles.
>
>
> -----Original Message-----
> From: Neven MacEwan [mailto:[EMAIL PROTECTED]]
> Sent: Friday, 2 November 2001 3:05 p.m.
> To: Multiple recipients of list delphi
> Subject: Re: [DUG]: Best practice - To except or not
>
>
> Paul
>
> Thanks for the help, It would be great it assigned() worked wouldn't it
> Maybe there is a suggestion for borland in there
>
> This leads to another question, is 'assigned()' pref to '<> nil'?, is
> pred(count) better thasn Count-1?
>
> Actually thats inc(1) questions, or was that 1+1 questions
>
> It must be friday
>
> Neven
>
>
> ----- Original Message -----
> From: "Paul Heinz" <[EMAIL PROTECTED]>
> To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
> Sent: Friday, November 02, 2001 2:53 PM
> Subject: RE: [DUG]: Best practice - To except or not
>
>
> > Sandeep wrote:
> >
> > > > > This is better
> > > > >
> > > > > if Assigned (Datasource.DataSet.Connection)
> > > > > then Result := Datasource.DataSet.Connection;
> > > >
> > > >
> > > > if Datasource.Dataset is nil won't this raise
> > > > an exception?
> > >
> > > Conditon evaluates to false in that case
> >
> > In Delphi 5, you get an access violation since Assigned only tests the
> final
> > deref not the early one. Maybe it's changed in Delphi 6.
> >
> > TTFN,
> > Paul.
> >
> >
>
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