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public class MyKvp<TAccept> : KeyValuePair<CharFA<TAccept>, CharFA<TAccept>
{
    public MyKvp(TAccept key, TAccept value) : base(key, value)
    { }
}

public class WhateverTheHellThisIs<TAccept> : KeyValuePair<MyKvp<TAccept>>, RegexExpression>
{
    public WhateverTheHellThisIs(MyKvp<TAccept> kvp) : base(kvp)
    { }
}

var thing = new WhateverTheHellThisIs<TAccept>(new MyKvp<TAccept>(dt.Key.Key, dt.Key.Value));

honey the codewitch wrote:

no typedef!

dt = KeyValuePair.Create(KeyValuePair.Create(dt.Key.Key, dt.Key.Value), tt[dt.Key]);

#if NETFRAMEWORK

using System;

namespace System.Collections.Generic;
{
    public static class KeyValuePair
    {
        public static KeyValuePair<TKey, TValue> Create<TKey, TValue>(TKey key, TValue value) 
            => new KeyValuePair<TKey, TValue>(key, value);
    }
}

#endif

Jörgen Andersson wrote:

But where do I find a reliable source of a million truly random numbers?