Are you sure self.dependencies isn't returning nil? That'd explain it.
Hank
On Apr 12, 2008, at 10:42 PM, K. Darcy Otto wrote:
My code used to look like this:
NSMutableArray *newDependencies = [self.dependencies mutableCopy];
[newDependencies addObjectsFromArray:[aDependency dependencies]];
Now self.dependencies and [aDependency dependencies] both return
NSArrays. The code works very well provided that the array returned
by self.dependencies does not have 0 objects in it. But if the
array returned by self.dependencies does have 0 objects in it, then
newDependencies still has 0 objects in it after addObjectsFromArray
is executed. I was able to correct this behaviour with the
following code:
NSMutableArray *newDependencies = [[NSMutableArray alloc] init];
[newDependencies addObjectsFromArray:self.dependencies];
[newDependencies addObjectsFromArray:[aDependency dependencies]];
This works fine even when the array returned by self.dependencies
has 0 objects. But I'm puzzled as to why it functions differently
than the first version. Any ideas?
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