Magic behind FreeAndNil

[DP News-Robot]

Delphi 10.4 Sydney brings one small but rather significant change. A change in the signature of the FreeAndNil procedure from

procedure FreeAndNil(var Obj); inline;


to

procedure FreeAndNil(const [ref] Obj: TObject); inline;





Wait, const means the variable is passed as a constant and cannot be changed from within the procedure.

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