The classes in those examples inherit from their respective types Dictionary, HashSet, etc. These classes are flagged in the. This tells unity to go through the fields of that class and check if they need to be serialized.
SO, while your callback is going on it might be looking into the fields of the parent class Unity uses the System. Serializable and the System. SerializeField attribute. So Dictionary and HashSet don't use this attribute Unity SAYS that private fields aren't serialized, and that you don't have to tag them with the System. And since. In your class though, those fields you have direct control over. You can flag them as System. NonSerialized, which signals to the unity serializer to not even bother with them at all.
So they won't get touched during the callback. Of course, you may want to continue serializing those fields for speed sake. Recalculating on the callbacks creates that overhead. So it's about balancing the speed vs the memory It still relies on fields in the object.
It means that you now need a field for the actual value, and a field for the serialized representation of it, that persists through runtime after serialization. If they just implemented a serialization callback more similar to the. Net ISerializable interface, where they hand you a representation of the serialized data that can have entries read and wrote to, all of this would be avoided. I have this feeling that just like a lot of their other design choices that they think lay users may find this confusing or hard to use.
But as a result we end up with a system that has "magic" behaviour, and memory overhead that the lay user is mostly left ignorant of. Oh, and I have ran into these same exceptions as well. So in the cases where it can't be avoided, you have to use it and you don't have full control of everything. Here's what I do. Be VERY explicit about your intent, the serializer seems to obey these attributes adequately. But when modifying serialized properties, do them in one fail swoop.
For example this is how I'd serialize a dictionary: Code csharp :. ToArray ;. I've always wondered why I sometimes see NonSerialized on private fields Just clear them in OnBeforeSerialize and iterate over the dictionary manually via GetEnumerator and MoveNext although you're doing the same thing as foreach, but for some reason foreach generates garbage when used to iter dictionaries, at least on my machine..
Maybe we don't even need to reconstruct it and start from 0? Last edited: Jun 25, Joined: Nov 15, Posts: 1. Awesome work! Thank you very much! Joined: Jun 1, Posts: First off, thank you for posting this! It seems to be a problem with reflection. SetValue System. Object obj, System. Object val, BindingFlags invokeAttr, System.
Binder binder, System. CheckInitialize UnityEditor. SerializedProperty property, UnityEngine. GetPropertyHeight UnityEditor. GetHeight UnityEditor. DrawEditor UnityEditor. DrawEditors UnityEditor.
Invoke System. Object obj, BindingFlags invokeAttr, System. Object[] parameters, System. It says right there in the top line of your error. BenZed , Aug 27, Joined: Mar 4, Posts: I have a question, in your prime number array, some numbers are missing like 5,7,13, Last edited: Sep 5, Jiraiyah , Sep 5, Bunny83 , CanisLupus , landon and 1 other person like this.
Oh, and I should point out, looking back on OP code. One reason is that 'hashcodes' aren't supposed to be considered persistent across systems. FuriantMulti likes this. I got it, thanks for info, But lordofduct, can you implement your own version without serializing all those fields? I am really new to serialization but in serious need of a serializable dictionary, maybe the OP won't do it any more, so, is it possible that you put a little time and do it?
I would appreciate it a lot. Json is simply an area that has had a lot of feature requests. We have addressed many of them. At the same time, we also need to keep pushing the platform forward. This often means laying the foundation for new technologies. Static linking is on the rise, especially for mobile workloads, but developers increasingly want this capability for other workloads too.
Source generating serializers is a part in this. Contrary to popular belief, the big features that are announced for a given release often started a few releases before, where we had to do small incremental features across the board. This is crucial for products that need to scale to an ever changing landscape of usage scenarios and requirements. Our planning is in the open. We have specifically put a goal in for. Did we finish all of them? Why the hell you need all of those functions?!!
Why intervention of programmer is needed? They literally provide the reason. I think Huo is merely stating why our design requires new APIs because without new APIs, the generated code would have to be called via reflection. Claiming a problem is easy is often ignorance. I have come to appreciate that whenever I think a given problem has an obvious solution that there are very likely other trade offs or complications I am not aware of.
The same is true here. Please read the blog post again and the other ones pointed out before, the explanation was already discussed. Do I understand it correctly seems to be the way according to examples that JsonSerializerContext is thread-safe? Let us know if you have issues with this. Json is not a drop-in replacement for Newtonsoft. Json, and also that System. Serialization attributes are considered legacy systems that we do not want to support natively in the serializer.
We are however, working toward allowing users to easily detect them with minimal configuration code, and set the corresponding type metadata to influence de serialization. Reflection is needlessly expensive, and error-prone. Anyone benchmarked this against the community maintained JsonSrcGen yet?
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