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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271
7
章
Adapter
パターンと
Facade
パターン
Facade
パターンと最小知識の原則
Client
クライアントは、
HomeTheaterFacade
という友達を一人だけ持ちます。
OO
プロ
グラミングでは、友達を一人しか持たな
いことは「よい」ことです！
HomeTheaterFacade
は、ク
ライアントのためにサブシステ
ムのすべての構成要素を管理し
ます。
HomeTheaterFacade
はクライアントの簡潔性と柔軟
性を保ちます。
サブシステムも最小知識の原則に従う
ようにしています。サブシステムが非
常に複雑になり、あまりにも多くの友
達が関連し合うような場合は、ファ
サードを追加してサブシステムのレイ
ヤを形成できます。
クライアントに影響を与えずに、
ホームシアターの構成要素を
アップグレードできます。
watchMovie()
endMovie()
listenToRadio()
endRadio()
HomeTheaterFa
cade
TheaterLights
on()
off()
dim()
toString()
PopcornPopper
on()
off()
pop()
toString()
Screen
up()
down()
toString()
Tuner
on()
off()
setAm()
setFm()
setFrequency()
toString()
amplifier
Amplifier
tuner
player
on()
off()
setStreamingPlayer()
setStereoSound() ...
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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.