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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494
12
章
パターンは連携できる
連携する
パターンを使う最良の方法の
1
つは、他のパターンとやり取りできるよ
うにパターンを家の外に出してあげることです。多くのパターンを使えば
使うほど、設計内で複数のパターンが一緒に登場するのを目にする機会も
増えます。設計内で連携して多くの問題に適用できる一連のパターンには、
Compoundパターンという特別な名前があります。そうです、ここではパ
ターンでできているパターンについて話をしていきます！
実世界ではさまざまなところで
Compound
パターンが使われているのを
見かけることでしょう。パターンが頭に入っていると、
Compound
パター
ンが連携するパターンにすぎないことがわかり、パターンが理解しやすく
なります。
この章では、最初に
SimUDuck
カモシミュレータの人懐っこいカモたち
を再び取り上げます。パターンを組み合わせる際にカモを使うのは当然で
す。カモはこの本では最初からずっと私たちと一緒にいて、多数のパター
ンに登場してくれているからです。同じ解決策の中でパターンがどのよう
に連携できるかを理解する上で役に立つでしょう。しかし、いくつかのパ
ターンを組み合わせただけでは、
Compound
パターンとしてふさわしい
解決策とはなりません。
Compound
パターンになるには、多くの問題に
適用できる汎用的な解決策でなければいけないのです。そこで、この章の
後半では、本物の
Compound
パターンを紹介します。それは
MVC
（モデ
ル
/
ビュー
/
コントローラ）です。 ...
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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.