Re: What is the expected Cocoa API behavior in an incomplete object traversal?
Re: What is the expected Cocoa API behavior in an incomplete object traversal?
- Subject: Re: What is the expected Cocoa API behavior in an incomplete object traversal?
- From: Klaus Backert <email@hidden>
- Date: Fri, 15 Oct 2010 22:06:53 +0200
On 15 Oct 2010, at 21:42, Tito Ciuro wrote:
Hello,
I'm implementing a method and I'm not sure what the behavior should
be when detecting an anomaly.
Case in point: I have a method that iterates through an array of
objects. As I traverse the array, I'm, checking whether the object
in the array conforms to a custom protocol. If it does, everything
is fine and I process it. However, if at some point I detect that
the array contains a non-conforming object, what should the method
do?:
a) skip the non-conforming object and continue processing and return
a BOOL or fill an NSError?
b) stop processing and return a BOOL or fill an NSError?
c) throw an exception?
Since the method would end up processing less objects that the
developer intended, I wonder what Cocoa developers would expect in
this case...
Based on this last sentence "... processing less objects that " [i.e.
"than"] "the developer intended ...", what you describe would count as
a programmer error, because of which throwing an exception would be
most appropriate for a Cocoa application.
Klaus
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