Well, there might not be any technical limitation against having nulls
in the list, but as far as a design decision in the API, I can think
of reasons why you wouldn't want them. The most obvious is that by
making the guarantee that it has no null pointers, you don't have to
check for nulls
For example, in WO, if you're using an NSDictionary "bindings" for
query bindings, you might want to query for some attribute
"myAttribute" that equals NULL in your database, so you would do
something like bindings.setObjectForKey(NSKeyValueCoding.NullValue,
"myAttribute"). So when EOF is c
And yeah... I guess that example is specific to NSDictionary. In
NSArray's case... something to do with NSKeyValueCoding conformance
maybe?
Clark
On 13-Dec-08, at 6:39 PM, Clark Mueller wrote:
Oh, I see. You wanted explanation. :-)
I suppose that if nothing else it would be for historical
Oh, I see. You wanted explanation. :-)
I suppose that if nothing else it would be for historical reasons, but
I was under the impression there was a point to NSNull. Specifically,
aren't there scenarios where you might want to distinguish a null
pointer from querying for the "presence" of a
On Dec 13, 2008, at 4:40 PM, Mike Schrag wrote:
OK -- So what's the official reason why you aren't allowed to put a
nil into an Objective-C NSArray? It seems like a pretty silly
restriction to me ...
Tradition? That is all that I can think of.
Chuck
--
Chuck Hill Senior Co
Cocoa Foundation has NSNull as JavaFoundation does, why not use that?
The NSNull class defines a singleton object used to represent null
values in collection objects (which don’t allow nil values).
... because it's a lame hack :) ? I know there are workarounds, but
in 2008, I don't expect jun
Cocoa Foundation has NSNull as JavaFoundation does, why not use that?
The NSNull class defines a singleton object used to represent null
values in collection objects (which don’t allow nil values).
Clark
On 13-Dec-08, at 4:40 PM, Mike Schrag wrote:
OK -- So what's the official reason why y
OK -- So what's the official reason why you aren't allowed to put a
nil into an Objective-C NSArray? It seems like a pretty silly
restriction to me ...
ms
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Webobjects-dev mailing lis
Our application tends to get this error under load i.e. Not while a single
user is just clicking away. We have been looking into this trying to figure
it out but we are somewhat baffled. Here is what we know so far:
* When the exception happens we see stack traces that look like the
following
ja
Use SepcialityFetches from the HoudahEOAccess framework.
On 11 Dec 2008, at 21:44, David Avendasora wrote:
Hi all,
I've googled this, but can't seem to find any answers even though
I'm guessing it's a pretty common thing.
I have a table that has nearly 2 million rows and I want to retrieve
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