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Mailing lists / fpc-devel / 2019-07

Property attributes support

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Sven Barth
to Ondrej Pokorny

Ondrej Pokorny schrieb am Sa., 20. Juli 2019, 12:04:

Show quoted text 10 lines
Hello! I saw that Sven committed property attributes support in trunk. Thank you for this! Is there any documentation how to use them? (Syntax, reading information during runtime etc?) I only found very old information: https://wiki.freepascal.org/Property_attributes http://free-pascal-general.1045716.n5.nabble.com/Property-attributes-td5718442.html

Here: https://wiki.freepascal.org/Custom_Attributes

The old Wiki page should propably be updated to reflect the current state of affairs...

You can also take a look at Delphi tutorials. The only difference is that we provide access through the TypInfo unit as well while Delphi officially only supports the Rtti unit.

Regards,
Sven

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Ondrej Pokorny
to Sven Barth
Sven Barth wrote
Here: https://wiki.freepascal.org/Custom_Attributes

Thank you!

The old Wiki page should propably be updated to reflect the current state of affairs...

I deleted the old information (nearly everything) and put a link to the new Wiki page there.

You can also take a look at Delphi tutorials. The only difference is that we provide access through the TypInfo unit as well while Delphi officially only supports the Rtti unit.

I am familiar with Delphi attributes - I didn't expect the FPC attributes to be Delphi-compatible. Thanks again!

Ondrej

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Sven Barth
to Ondrej Pokorny
Ondrej Pokorny wrote 6 lines
> The old Wiki page should propably be updated to reflect the current > state of affairs... I deleted the old information (nearly everything) and put a link to the new Wiki page there.

Probably for the best ;)

Show quoted text 6 lines
> You can also take a look at Delphi tutorials. The only difference is > that we provide access through the TypInfo unit as well while Delphi > officially only supports the Rtti unit. I am familiar with Delphi attributes - I didn't expect the FPC attributes to be Delphi-compatible. Thanks again!

As if we'd implement a big feature like that in a incompatible way... The proposal in the Wiki was before Delphi added attributes and Joost implemented them in a Delphi-compatible way from the get go.

Regards,
Sven

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