Re: null values in NSArray ???
Re: null values in NSArray ???
- Subject: Re: null values in NSArray ???
- From: Dennis De Mars <email@hidden>
- Date: Fri, 17 Jan 2003 08:09:04 -0800
I wouldn't try to trick NSMutableArray into accepting nil entries,
since the implementation probably relies on these entries being non-nil
throughout the class. This is what NSNull is for.
NSNull is a singleton (one unique instance) so you don't incur any
allocation overhead by using it. If you don't even want to incur the
overhead of a method call you can just put it into a local variable and
use that wherever you wanted to use nil.
- Dennis D.
On Friday, January 17, 2003, at 07:48 AM, Bob Miller wrote:
Hello,
Can anyone tell me if it is possible to manage an NSMutableArray that
contains null values for objects at any given index ? I'd like to be
able to have an array such as this so that each location can be filled
as a 'place holder' so that if a particular object at any given index
is null, it gets ignored or possibly populated with an object id. It
seems that this would be a nice feature to have. I don't want to incur
the overhead of the NSNull object allocation(s) in a large grid. Can
it be done by catching the null object exception ?
Regards,
Bob M.
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