using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var list = new List<Wrapper<char>>

        {

        'A', (Predicate<char>)char.IsDigit

        };

        list.Dump();

    }

}

​

public class Wrapper<T>

{

    public static implicit operator Wrapper<T>(T value)

    {

        return new ValueWrapper<T>(value);

    }

​

    public static implicit operator Wrapper<T>(Predicate<T> predicate)

    {

        return new PredicateWrapper<T>(predicate);

    }

}

​

public static class WrapperHelper

{

    public static Wrapper<T> Wrap<T>(this T value)

    {

        return new ValueWrapper<T>(value);

    }

​

    public static Wrapper<T> Wrap<T>(this Predicate<T> predicate)

    {

        return new PredicateWrapper<T>(predicate);

    }

}

​

public class ValueWrapper<T> : Wrapper<T>

{

    private readonly T _value;

    public ValueWrapper(T value)

    {

        _value = value;

    }

​

    public override string ToString()

    {

        return _value.ToString();

    }

}

​

public class PredicateWrapper<T> : Wrapper<T>

{

    private readonly Predicate<T> _value;

    public PredicateWrapper(Predicate<T> value)

    {

        _value = value;

    }

​

    public override string ToString()

    {

        return _value.Method.ToString();

    }

}