covariant return types | C# Online Compiler

covariant return types by GuRuStron

using System;
					
public class Program
{
	public static void Main()
	{
		Console.WriteLine(new Example().ReturnMe());
	}
}

abstract class ExampleBase
{
    public abstract ExampleBase ReturnMe();
}
class Example : ExampleBase
{
    public override Example ReturnMe() => new Example();
}

​x
 
using System;
                    
public class Program
{
    public static void Main()
    {
        Console.WriteLine(new Example().ReturnMe());
    }
}
​
abstract class ExampleBase
{
    public abstract ExampleBase ReturnMe();
}
class Example : ExampleBase
{
    public override Example ReturnMe() => new Example();
} 

Json.NET version: Newtonsoft.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed

Original JSON:
[
  {
    "type": "06A, 06B, 06C, 06D, 06E",
    "qt": "6-8-",
    "id": "06A, 06B, 06C, 06D, 06E6-8-"
  },
  {
    "type": "06A",
    "qt": "6-8-",
    "id": "06A"
  }
]

Filtered and re-serialized JSON:
[
  {
    "type": "06A",
    "qt": "6-8-",
    "id": "06A"
  }
]

Cached Result
Last Run:	12:23:49 am
Compile:	0.362s
Execute:	0.206s
Memory:	1.05Mb
CPU:	0.188s

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