Florian Klaempfl wrote on Sat, 17 Oct 2009:
Graeme Geldenhuys schrieb:
2009/10/16 Paul Ishenin <webpi...@mail.ru>:
Sealed class is a class which can't be derived by another class.
This one is
fully supported by delphi.
Would you mind explaining this - I never saw the benefit of a sealed
class.
From a compiler developers point of view, it makes optimization easier
under certain cases (e.g. virtual method calls).
FPC can already do this automatically for all classes in the entire
program with whole-program optimization. You don't need sealed classes
for this (they might slightly improve those optimizations, but I doubt
it will be noticeable in real life -- even doing it for an entire
program using WPO generally has no noticeable effects on speed, and
only marginal effects on code size).
Jonas
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