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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
606
14
章
Interpreter
パターンには正
式な文法の知識が必要です。
正式な文法を学習したことが
なくても、先に進んでこのパ
ターンを一とおり読んでみましょう。それでも
要点はわかるでしょう。
Interpreter
パターン
expression ::= <command> | <sequence> | <repetition>
sequence ::= <expression> ';' <expression>
command ::= right | quack | fly
repetition ::= while '(' <variable> ')'<expression>
variable ::= [A-Z,a-z]+
Interpreter
パターン
言語のインタプリタを構築する際に、Interpreter パターン
を使いましょう。
シナリオ
カモシミュレータを覚えていますか？
子供たちがプログラミング
学習するための素晴らしい教育ツールにもなりそうな予感がします。
このシミュレータを使えば、子供が
1
羽のカモを簡単な言語で制御で
きるようになります。言語の例は以下のとおりです。
それでどうする？
文法がわかったので、次に必要なのは、生徒が自分のプログラミン
グがシミュレーションされたカモに与える効果を確認できるように、
その文法に沿った文を表現し解釈する方法です。
さて、昔プログラミング入門クラスで習った文法の作成方法を思
い出し、文法を書き出してみましょう。
カモを右に向かせる
一日中飛ぶ
鳴く
プログラムは、コマンドと繰り返し ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.