May 2019
Intermediate to advanced
464 pages
9h 22m
Japanese
Content preview from Node.jsデザインパターン 第2版
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147
6
章
オブジェクト指向デザインパターンの
Node.js
への適用
デザインパターンとは、繰り返して現れる問題に対して再利用可能なソリューションのことです。定
義には非常に広範囲のものが含まれ、複数の領域にまたがる可能性があります。しかし、通常この言
葉は有名なオブジェクト指向パターンのことを指します。今はほとんど伝説と化し、「四人組」あるいは
「
GoF
（
gang of four
）」と呼ばれる、
Erich Gamma
、
Richard Helm
、
Ralph Johnson
、
John Vlissides
に
よる共著『オブジェクト指向における再利用のためのデザインパターン』によって
90
年代に有名になっ
たものです。この本ではこれを「従来型のデザインパターン」あるいは「
GoF
デザインパターン」と呼ぶ
ことにします。
この一連のオブジェクト指向デザインパターンを
JavaScript
に適用する場合、従来型のオブジェク
ト
指向言語のときと同じようにそのまま型どおりにというわけにはいきません。
JavaScript
はマルチ
パラダイムの、オブジェクト指向、プロトタイプベース、動的型付け可能な言語です。関数は第
ファーストクラス
1
級
のオブジェクトとして扱われますし、関数型プログラミングの形式を使うこともできます。おかげで
JavaScript
は非常に多才な言語となっており、開発者にはとてつもなく強い力を与えてくれますが、同
時にプログラミングのスタイル、慣用、技法、さらには言語の使われ方のパターンまで、多数の流派に
分裂し ...
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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.