Visit a type and returns a string representation of the type

ShowVisitor.cs

interface IShowable<T>
{
    T Value { get; }
    U Accept<U>(IVisitor<T, U> visitor);
}

class ShowVisitor : IVisitor<string, string>,
                    IVisitor<int, string>,
                    IVisitor<float, string>
{
    public string Visit(string t)
    {
        return t;
    }
    public string Visit(int t)
    {
        return t.ToString();
    }
    public string Visit(float t)
    {
        return t.ToString();
    }
    public string Show<T>(IShowable<T> showable)
    {
        return showable.Accept(this as IVisitor<T, string>);
    }
}