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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Delphi 10.4 Sydney (Denali)’ Category

Delphi has had a more type safe FreeAndNil or a while now, but in order to do so it lies to you

Posted by jpluimers on 2024/06/26

During my year+ of cancer treatments, Embarcadero did a tiny thing that makes [Wayback/Archive]FreeAndNil safer to use. In order to do so, the method now lies to you by taking a const [ref] parameter which technically it is not allowed to change, but the internal hackery allows it to. Dalija Prasnikar explained it in 2020: [Wayback/Archive] Magic behind FreeAndNil.

The new signature is this:

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

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Posted in Conference Topics, Conferences, Delphi, Delphi 10.4 Sydney (Denali), Delphi 11.0 Alexandria (Olympus), Development, EKON, Event, Software Development | 2 Comments »