I'm curious about this. I have this snippet of code (boiled down)
NSNumber* foo = [NSNumber numberWithInt:7];
NSNumber* bar = nil;
NSDictionary* dictionary = [NSDictionary dictionaryWithObjectsAndKeys:
foo == nil ? [NSNull null] : foo, @"foo",
bar == nil ? [NSNull null] : bar, @"bar",
nil
];
In my build settings, I tell it to treat all warnings as errors, and I
get this for those two lines with the ternary:
warning: comparison of distinct Objective-C types lacks a cast
This fixes it:
NSDictionary* dictionary = [NSDictionary dictionaryWithObjectsAndKeys:
foo == nil ? [NSNull null] : (NSObject*) foo, @"foo",
bar == nil ? [NSNull null] : (NSObject*) bar, @"bar",
nil
];
Note that I cannot explicitly cast to NSNumber* for some reason.
Now, I actually appear to be fine. Putting in the cast to NSObject*
there works just fine and the code behaves properly after that, so
unless someone tells me that it's horrible and I shouldn't I have no
problem.
But I'm curious - why is this required? What's going on here? I'm just
not seeing the issue, whatever it is.
-Jim....
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