July 2024
Beginner to intermediate
272 pages
5h 40m
Japanese
Content preview from アーキテクトの教科書 価値を生むソフトウェアのアーキテクチャ構築
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078
設計パターン
2.4
パターンとは
ソフトウェア設計におけるパターンとは、よく遭遇する設計上の問題
に対する解決策や設計アプローチを、再利用可能な形式にまとめたもの
です。その先駆けとなった、かの有名なGoF（Gang of Four。四人の
共著者を指す）によるデザインパターンの書籍
※9
では、以下のように説
明されています。
これらのデザインパターンは、オブジェクト指向システムにおい
て重要でかつ繰り返し現れる設計を、それぞれ体系的に名前付けし、
説明を加え、評価したものである。
設計だけにとどまらず、分析や実装、さらにはプロセスや組織にいた
るまでソフトウェア開発に関わるありとあらゆるものに対してパターン
が発見され、様々な文献にまとめられています。
以降の本節では、設計に関するパターンのうちデザインパターンと
アーキテクチャスタイル、アーキテクチャパターンを取り上げます。
デザインパターン
デザインパターンといえば、GoFのデザインパターンがあまりにも
有名です。図2.4.1 のように「生成に関するパターン」「構造に関するパ
ターン」「振る舞いに関するパターン」の三つの分類で、合わせて23の
パターンが存在します
※9
。
079
2
⹅
図2.4.1
GoFのデザインパターン
分類 パターン
生成に関するパターン
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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.