静态泛型类作为字典

泛型类中的静态字段对于泛型参数的每个组合都有一个单独的值。因此,它可以用作词典<类型 &燃气轮机;

这比静态词典好还是坏<类型 >?

换句话说,这些实现中哪一个更有效?

public static class MethodGen<TParam> {
    public static readonly Action<TParam> Method = CreateMethod();
    static Action<TParam> CreateMethod() { /*...*/ }
}

public static class MethodGen {
    static readonly Dictionary<Type, Delegate> methods 
              = new Dictionary<Type, Delegate>();

    public static Action<T> GetMethod<T>() {
        //In production code, this would ReaderWriterLock

        Delegate method;
        if(!methods.TryGetValue(typeof(T), out method)
            methods.Add(typeof(t), method = CreateMethod<T>());
        return method;
    }

    static Action<T> CreateMethod<T>() { /*...*/ }
}

特别是,CLR如何通过泛型类型参数查找静态字段?