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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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.
28
2 章 Python と JavaScript 間の言語学習の橋渡し
function processStudentData(data, passThreshold, meritThreshold){
passThreshold = typeof passThreshold !== 'undefined'?
passThreshold: 60;
...
幸い、
ECMAScript 6
をベースにした間もなく登場する
JavaScript
の最新バージョンでは
Python
のようなデフォルトパラメータを使えるようになります（
https://developer.mozilla.org/
en/docs/Web/JavaScript/Reference/Functions/default_parameters
）。
function processStudentData(data, passThreshold=60,
meritThreshold=75){
...
2.3.15
反復処理：
for
ループと関数型の代替手法
例
2-3
と例
2-4
のセクション
C
は最初の大きな乖離を表しています。
JavaScript
の関数型メソッ
ドの例です。
Python
の
for
ループは、配列や
dict
などの任意のイテレータに対して簡潔で直感的にわかりや
すく効果的に機能します。
dict
に関する初歩的なミスの
1
つは、標準的な反復を項目ではなくて
キーに対して実行することです。以下に例を示します。
foo = {'a':3, 'b':2} ...
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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.