[Qgis-developer] How can I reset the starting point of a QgsFeatureIterator?

[Stefano Masera]

No, it does False! 


But if I put 
iterator.rewind() 
before the first use of the iterator it does True. 





----- Messaggio originale -----

Da: "G. Allegri" <giohappy at gmail.com> 
A: "Stefano Masera" <stefano.masera at arpa.piemonte.it> 
Cc: "qgis-developer" <qgis-developer at lists.osgeo.org> 
Inviato: Mercoledì, 23 ottobre 2013 16:36:12 
Oggetto: Re: [Qgis-developer] How can I reset the starting point of a QgsFeatureIterator? 


Does iterator.rewind() return True? 



2013/10/23 Stefano Masera < stefano.masera at arpa.piemonte.it > 




Hi list, 
I use an iterator two times in a python code and I wantto reset it to the starting point before to reuse it. 
In this way I hope to be more quick. 


# first use of the iterator 
iterator = layer.dataProvider().getFeatures() 

for feature in iterator: 
# operations 

# than, a second time I have to use the operator, in a following part of the code: 

for feature in iterator: 
# other operations 


But it doesn't start from the first feature! 



I try with: 
iterator.rewind() 
between the two blocks, but it doesn't work. 


Thanks. 





Stefano Masera 

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-- 
Giovanni Allegri 
http://about.me/giovanniallegri 
blog: http://blog.spaziogis.it 
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