Nil-guarded dictionary key-value retrieval for JSON responses

gistfile1.txt

// JSON is dangerous, take one of these!

+ (id)nullGuardedDict:(NSDictionary *)dict valueForKey:(NSString *)key;
{
	id obj = nil;
	obj = [dict valueForKey:key];
	if (obj == [NSNull null]) {
		obj = nil;
	}
	return obj;
}