[QGIS-Developer] Default QgsFeatureFid ?

[Alessandro Pasotti]

Hi,

maybe you can use

#define FID_NULL            std::numeric_limits<QgsFeatureId>::min()



On Fri, Oct 15, 2021 at 10:40 AM Sandro Santilli <strk at kbt.io> wrote:

> While writing unit test for QgsFeatureRequest in core I found
> that the filterFid() method for the default-constructed
> QgsFeatureRequest returns -1 rather than what a default-constructed
> QgsFeatureId() would return (0)
>
> So I've been wondering: *should* a QgsFeatureFid have a default
> value of -1 instead ? More generically: does QGIS make any assumption
> about *which* special value of QgsFeatureFid means "no fid" ?
>
> If there's no such notion as an "unspecified FID" then I wonder
> why QgsFeatureRequest is taking the effort of specifying a default
> value of it different from the default, and if there's a good reason
> it should probably be documented there.
>
> --strk;
>
>   Libre GIS consultant/developer
>   https://strk.kbt.io/services.html
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-- 
Alessandro Pasotti
QCooperative:  www.qcooperative.net
ItOpen:   www.itopen.it
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