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
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you are here
523
12
章
Compound
パターン
MVC
（モデル
/
ビュー
/
コントローラ）との出会い
ビュー
コントローラ
class Player {
play(){}
rip(){}
burn(){}
}
モデル
Apple Music
（
iTunes
）などのお気に入りの
MP3
プレーヤーを使っているとしましょう。その
プレーヤーのインタフェースを使って、新しい曲の追加、再生リストの管理、曲名の変更がで
きます。プレーヤーは、すべての曲とその曲に関連する名前やデータを持つ小さなデータベー
スを管理しています。また、曲の再生も行い、再生する際には常に現在の曲名、再生時間など
でユーザインタフェースが更新されます。
この背後には、モデル
/
ビュー
/
コントローラがあります。
コントローラが
モデルを操作す
る
モデルはビューに状態
変化を通知する
ビュー表示が
更新される
「新しい曲を再
生する」
コントローラは、
プレーヤーのモデ
ルに曲の再生を始
めるよう求める
モデルは状態が変
わったことをビュー
に通知する
更新された曲表示を見
て、新しい曲を再生し
て聴く
モデルには、
MP3
の管理と再生に必
要なすべての状態、データ、アプリ
ケーションロジックが含まれます。
インタフェースを
使って、アクショ
ンがコントローラ
に伝わる
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and much more.
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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.