[DUG] Object is Object vs Object.Classname = 'Object'

[David Moorhouse (DUG)]

Have you timed it ?

My gut feeling is the first form is a pointer comparison, so would be 
very quick, whereas the second form is a string comparison so not as quick.

Also the first has the advantage of compile time checking.

0.02c

D

On 25/01/11 17:46, Ross Levis wrote:
>
> Just as a matter of curiosity really, anyone know if there is any 
> difference in speed for these 2 operations.
>
> if abc is TMyObject then
>
> and
>
> if abc.Classname = 'TMyObject' then
>
> ?
>
>
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