Default values for values that didn't exist

[denchInside]

If the json payload does not have some values to serialize them into a struct, how to set such values to a custom default?
Nullable types aren't the choice because I use .net framework 4.5.

[denchInside]

Well, I have solved the problem by changing 3 lines of code:

1. use a class instead of a struct
2. use a predefined field (this would be the default value) and a property referencing it instead of an automatic property ( {get; set;} )
3. in JSONParser.cs, line 334, change object instance = FormatterServices.GetUninitializedObject(type) (analog to default(type)) to object instance = Activator.CreateInstance(type); (analog to new ClassName().)
   Now, the predefined values will stay untouched.

This variant wouldn't work for classes which doesn't have empty constructors.
So, maybe you will need to add object defaultObject into parameters of public static T FromJson<T>(this string json) (and put the defaultObject to all ParseObject() calls) and static object ParseObject(Type type, string json) (and set object instance to the defaultObject too) to manually set the default object if needed.