On 14/10/2009, at 6:52 AM, DKJ wrote:
if( data == nil ) do this; ------------------------------------There's no file.plist in the directory. But "do this" doesn't get done.However, "do this" does get done when I have this: ------------------------------------ if( [data count] == 0 ) do this; ------------------------------------So it looks like arrayWithContentsOfFile: is returning an empty array when file.plist doesn't exist.
Note that the test for [data count] == 0 will work as a test whether the method returns nil or an empty array. If it returns nil, the message [nil count] is legal and will always return 0. So that approach catches both possibilities, so the question of whether the docs are wrong (unlikely, but I can't see the problem either) goes away.
Similarly, tests such as [string length] > 0 also catch both nil strings and empty ones, so kill two birds with one stone. You don't need to bother with things like if( string && [string length] > 0 )...
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