Generic Type error

[fpdeguzman]

hi, its me again.
i would like to ask why there is an error when i use an "int" type in Fmt.Serialize? The detail error is """The type 'int' must be a reference type in order to use it as parameter 'T' in the generic type or method 'Kds.Serialization.Formatter<F>.Serialize<T>(T)""".
the same error also occurs when using Fmt.Deserialize.
my code goes like this.

  public class Sample
  {
    internal int id;
    internal string code;

    public int Id {
      get { return id; }
      set { id = value; }
    }

    public string Code {
      get { return code; }
      set { code = value; }
    }

   }

  public class SampleField: ReferenceField<Sample>
  {
    public SampleField(Formatter fmt, bool isDefault) : base(fmt, isDefault) { }

    protected override void SerializeValue(Sample value) {
      Fmt.Serialize<int>(value.Id);         <----- Error -----
      Fmt.Serialize<string>(value.Code);
    }

    protected override void DeserializeInstance(ref Sample instance) {
      if (instance == null)
        instance = new Sample();
    }

    protected override void DeserializeMembers(Sample instance) {
      Fmt.Deserialize<string>(ref instance.id); <----- Error -----
      Fmt.Deserialize<string>(ref instance.code);
    }

    protected override void SkipValue() {
      if (Fmt.Skip<int>())
      Fmt.Skip<string>();
    }
  }

thank you very much!

[Karl Waclawek]

If you look at the Serialize overloads in the source code, you will see that there are two ways to serialize value types:

a) Formatter.Serialize<T>(T value) where T is a *nullable" value type (e.g. int? in C#)
b) Formatter.Serialize<T>(ref T value) where T is a regular value type.

The serializer is meant to deal with nulls even for structs.
You can just assign your int to a temporary nullable int, or change your int declaration to int?
Have a look at the getting started demo.

Karl

[fpdeguzman]

thank you very much. have a nice day! =)