12:46

[abaa...@hotmail.com]

Hi,

I have a question about what is happening in this video at 00:12:46 -

http://www.youtube.com/watch?v=sQ6EmOzXdSg#t=766s.

Please could you clarify if this means it is okay to perform a downcast using the dynamic cast. I was under the impression that the downcast should not be performed/ avoided in all cases..

Thanks!

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Reference Key - Key('StudentQuestionEntity', 5796030654709760, namespace='ns_noc23_cs50')

[Arup Kumar Chattopadhyay]

The rule is "a pointer or a reference must point or refer to its own type object or derived (child) type object"; otherwise, it will raise an error or exception.

[An Anubha]

Thanks so much for answering all my queries. 

Sent from Outlook for Android

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From: Arup Kumar Chattopadhyay <arden...@gmail.com>
Sent: Wednesday, 26 April 2023, 03:28
To: Discussion forum for Programming in Modern C++ <noc23-cs5...@nptel.iitm.ac.in>
Cc: abaa...@hotmail.com <abaa...@hotmail.com>
Subject: Re: 12:46