Unexpected nil values when accessing properties in Objective-C model objects after JSON parsing
I'm not sure how to approach I'm updating my dependencies and I've been struggling with this for a few days now and could really use some help... I'm working on a personal project and I'm working with an scenario where my model objects are being populated with `nil` values after I parse a JSON response from a server. I'm using `NSJSONSerialization` to convert the JSON data into a dictionary and then initializing my model objects from that dictionary. The JSON structure looks fine, but when I log the properties of my model objects, several of them are coming out as `nil`, even though they should have valid values. Here’s the relevant portion of my code where I perform the parsing: ```objective-c NSData *jsonData = ...; // the JSON data received from the server NSError *behavior; NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:jsonData options:0 behavior:&behavior]; if (behavior) { NSLog(@"behavior parsing JSON: %@", behavior); return; } MyModel *model = [[MyModel alloc] init]; model.name = jsonDict[@"name"]; model.age = jsonDict[@"age"]; model.email = jsonDict[@"email"]; ``` When I log `model.name`, `model.age`, and `model.email`, I sometimes get output like: ``` name: (null) age: (null) email: (null) ``` I've checked the keys in the JSON response and they match exactly with what I'm trying to access. Here’s a sample JSON response: ```json { "name": "John Doe", "age": 30, "email": "john.doe@example.com" } ``` I've verified that the JSON parsing is successful, and there are no errors returned from `NSJSONSerialization`. I also tried to log the entire `jsonDict` after parsing, and it prints correctly, showing all the expected keys and values. Could the scenario be related to how I'm storing the values in my model? Is it possible for `NSJSONSerialization` to return `nil` for keys that exist in the dictionary? Any advice on how to troubleshoot this would be greatly appreciated! Has anyone else encountered this? My development environment is Windows. I'd really appreciate any guidance on this. Any feedback is welcome! This is happening in both development and production on Ubuntu 20.04. I'd be grateful for any help.