1) Or do I still need to implement to validation methods described in the KVC guide?
and
2) do I need to override the setNilValueForKey: and similar methods?
Thanks.
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It is KVO compliant if you use
@synthesize.But it will not have any validation. The run-time can not make any guess on how you want to validate your data. So
nilvalues etc. will be allowed. Validation is up to you.