August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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12
2 章 Python と JavaScript 間の言語学習の橋渡し
ly/1tADn8E
）、非同期
I/O
を使う点。つまり、ファイルアクセスなどの簡単な処理にコール
バック関数を使う必要がある。
• JavaScript
は基本的に
Web
開発に使い、つい最近まではブラウザに縛られていたが
†
、
Python
はほぼどこでも使われる。
• JavaScript
は
Web
ブラウザでの唯一の第一級言語で、
Python
は除外されている。
• Python
には幅広い機能を網羅した標準ライブラリがあるのに対し、
JavaScript
のユーティリ
ティオブジェクトは限られている（例えば、
JSON
、
Math
など）。
• Python
はかなり古典的なオブジェクト指向クラスを持つのに対し、
JavaScript
はプロトタイ
プを使う。
• JavaScript
には汎用的なデータ処理ライブラリはない
‡
。
上記の相違点は、本書で
2
つの言語が必要になることを強調しています。ブラウザのデータ可
視化を
JavaScript
が独占しているので、従来のデータ処理スタックを補完する必要があります。
そして、
Python
は現状で最高のデータ処理スタックを備えています。
2.2
コードと対話する
Python
と
JavaScript
の最大の利点の
1
つは、インタラクティブに実行できることです。
Python
のインタプリタはコマンドラインから実行しますが、
JavaScript
のインタプリタは一般にコンソー
ル経由で
Web
ブラウザからアクセスします。通常は組み込みの開発ツールから利用します。この ...
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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.