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NSMutableDictionary category to handle setting nil as an object for a key, adding [NSNull null] instead.
#import <Cocoa/Cocoa.h>
@interface NSMutableDictionary (PXDictionaryAdditions)
- (BOOL)setObjectOrNull:(id)anObject forKey:(id)aKey;
@end
#import "NSMutableDictionary+PXDictionaryAdditions.h"
@implementation NSMutableDictionary (PXDictionaryAdditions)
//Returns NO if `anObject` is nil; can be used by the sender of the message or ignored if it is irrelevant.
- (BOOL)setObjectOrNull:(id)anObject forKey:(id)aKey
{
if(anObject!=nil) {
[self setObject:anObject forKey:aKey];
return YES;
}
else {
[self setObject:[NSNull null] forKey:aKey];
return NO;
}
}
@end
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