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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528
12
章
MVC
と
DJ
ビュー
MVC
を使ってビートを制御する
今度は
DJ
になってみましょう。
DJ
にとってはすべてがビートにかかっています。
95 BPM
（
Beats Per Minute
）のスローなダウンテンポの曲から始め、その後、群衆
を
140 BPM
のトランステクノで熱狂させるかもしれません。最後は落ち着いた
80
BPM
の環境音楽で締めくくります。
これをどのように行えばよいでしょうか？
まず、ビートをコントロールするため
のツールの構築から始めます。
このビューには、モ
デルの状態を表示す
る部分と制御する部
分という
2
つの部分
があります。
特定の
BPM
を入力して設定ボタンを押す
と、特定の
BPM
を設定できます。さらに、
調整ボタンを使って微調整できます。
振動バーがビートをリアルタイムに表示します。
表示は現在の
BPM
を表示し、
BPM
が変わるたび
に自動的に設定されます。
まずはビューの構築から始めましょう。ビューにより、猛烈なド
ラムビートを作成し、
BPM
を調整することができます。
Java DJ
ビューとの出会い
現在の
BPM
：
120
ビュー
120
コントロール
DJ
コントロール
BPM
を入力：
設定
BPM
を
1
ずつ
上げます。
BPM
を
1
ずつ
下げます。
you are here
529
12
章
Compound
パターン ...
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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.