June 2022
Beginner to intermediate
672 pages
17h 23m
Japanese
Content preview from Head Firstデザインパターン 第2版 ―頭とからだで覚えるデザインパターンの基本
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
スターバズコーヒーへようこそ
Beverage
は抽象クラスです。ス
ターバズコーヒーのメニューにあ
るすべての飲み物によってサブク
ラス化されます。
各サブクラスは
cost()
を実装して飲み物の料金を返します。
cost()
Espresso
cost()
Decaf
cost()
DarkRoast
cost()
HouseBlend
Beverage
description
getDescription()
cost()
//
他の便利なメソッド
description
インスタンス変数は
各サブクラスで設定され、「最高級
ダークロースト」といった飲み物の
説明が保持されています。
getDescription()
メソッドはこの
説明を返します。
cost()
は抽象メソッドで
す。サブクラスは独自の
実装を定義する必要があ
ります。
スターバズコーヒーは、最も急成長しているコーヒーショッ
プとして近所で評判です。地元でスターバズの店舗を見かけた
ら、その通りを見渡してみてください。近くにもう
1
軒、スター
バズの店舗が見つかるはずです。
スターバズコーヒーは急成長しているので、飲み物の提供に
合わせて注文システムを急いで刷新しているところです。
開業当初は、以下のようにクラスを設計しました。
80
3
章
スターバズ物語
Beverage
description ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.