[69788 Closed] Dynamic types in Oxygene

Elements Oxygene
1

Hi,
How can I use code written in C# in Oxygene (word dynamic) ?

var serializer = new JavaScriptSerializer();
var dict = serializer.Deserialize<dynamic>(aJSONData);
return dict[aJSONParameter].ToString();

Best regards
Mateusz

2

Oxygene supports the “dynamic” type same as C#, with the “dynamic” keyword. So the above code should works is (adjusted to Oyxgene syntax, of course).

3

Oxidizer made code like this, but it doesn’t work - (E28) Unknown type “dynamic”:

namespace WCF_JSONReader;

interface

uses
  System,
  System.Collections.Generic,
  System.Linq,
  System.Text,
  System.Threading.Tasks,
  System.Web.Script.Serialization,
  RemObjects.Elements.System;

type
  JSONReader = public class
  public
    class method GetDataFromJSON(aJSONData: String; aJSONParameter: String): String;
  end;


implementation


class method JSONReader.GetDataFromJSON(aJSONData: String; aJSONParameter: String): String;
begin
  //JSON deserialization http://procbits.com/2011/04/21/quick-json-serializationdeserialization-in-c
  var serializer := new JavaScriptSerializer();
  var dict := serializer.Deserialize<&dynamic>(aJSONData);
  exit dict[aJSONParameter].ToString()
end;

end.
4

Remove the &, dynamic is a keyword.

5

I’ve tried without and I get - Error 2 (E1) semicolon (:wink: expected, got “dynamic”

6

You can’t create a dynamic, it needs to be something else and then cast as a dynamic

var serializer := new JavaScriptSerializer();
  var dict:dynamic := serializer.Deserialize<ExpandoObject>(aJSONData);
  exit dict[aJSONParameter].ToString()
7

It works :slight_smile: thank you.
Best regards
Mateusz

8

Hmm, odd that that works in C# then?

9

In C# it works…

10

Thanks, logged as bugs://69788: Cannot use “Dynamic” in generic parameter

11

bugs://69788 got closed as fixed