R help - Oct 2003 - is.na(v)<-b (was: Re: Beginner's query - segmentation fault)

Also, presumably is.na<- could be redefined by the user for particular
classes so if you got in the habit of setting NAs that way it would
generalize better.

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Date: Wed, 8 Oct 2003 11:49:29 +0100 (BST) 
From: Prof Brian Ripley <ripley at stats.ox.ac.uk>

I don't think it can ever `go wrong', but it can do things other than
the
user intends. The intention of is.na<- is clearer, and so perhaps user 
error is less likely? That is the thinking behind the function, anyway.



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