CAPTAIN AMAZING - THE DEATH OF THE OBJECT - structs, class, is

Head First C#:
A Learner's Guide to Real-World Programming
with C# and .NET
Kindle版

開発環境

Head First C Sharp: A Learner’s Guide to Real-World Programming with C Sharp and .NET (Andrew Stellman(著)、Jennifer Greene(著)、O’Reilly Media)の Chapter 11(CAPTAIN AMAZING - THE DEATH OF THE OBJECT)、p.616(Pool Puzzle)の解答を求めてみる。

コード

Program.cs


using ConsoleApp1;

new Faucet();

Faucet.cs

namespace ConsoleApp1;

public class Faucet
{
    public Faucet()
    {
        Table wine = new Table();
        Hinge book = new Hinge();
        wine.Set(book);
        book.Set(wine);
        wine.Lamp(10);
        book.garden.Lamp("back in");
        book.bulb *= 2;
        wine.Lamp("minutes");
        wine.Lamp(book);
    }
}

Table.cs

using System;

namespace ConsoleApp1;

public struct Table
{
    public string stairs;
    public Hinge floor;
    public void Set(Hinge b) => floor = b;
    public void Lamp(object oil)
    {
        if (oil is int oilInt)
        {
            floor.bulb = oilInt;
        }
        else if (oil is string oilString)
        {
            stairs = oilString;
        }
        else if (oil is Hinge vine)
        {
            Console.WriteLine($"{vine.Table()} {floor.bulb} {stairs}");
        }
    }
}

Hinge.cs

namespace ConsoleApp1;

public class Hinge
{
    public int bulb;
    public Table garden;
    public void Set(Table a) => garden = a;
    public string Table() => garden.stairs;
}

入出力結果(Terminal, Zsh)

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