To generate an executable image that can be randomly rebased at load-time by using the address space layout randomization (ASLR) feature of Windows Vista, use the $SetPEOptFlags directive, or use the $DYNAMICBASE directive, which is new on Delphi 2007.
To do so, use either{$DYNAMICBASE ON}
or
{$SetPEOptFlags $40}
{$SetPEOptFlags IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE}
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes