February 2016
Intermediate to advanced
232 pages
4h 39m
Japanese
Content preview from Rパッケージ開発入門 ―テスト、文書化、コード共有の手法を学ぶ
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132
citHeader()
と
citFooter()
を使って、書誌情報の前後に情報を追加することができます。
11.2
R
の
パッケージには、
R
以外の言語で書かれた補助スクリプトが含まれる場合があります。他の言
語の使用は、外部への依存関係を追加してしまうため、一般的には避けるべきですが、他の言語
で書かれた大量のコードをラップして使用したい場合などには有用です。例えば、
gdata
（
http://
cran.r-project.org/web/packages/gdata/index.html
）はエクセルファイルを
R
に読み込むための
Spreadsheet::ParseExcel
（
http://search.cpan.org/~dougw/Spreadsheet-ParseExcel-0.65/
）と
いう
Perl
のモジュールをラップしています。
この種のスクリプトは、
inst/
のサブディレクトリ（例えば
inst/python
、
inst/perl
、
inst/
ruby
など）に置くことになっています。自分のパッケージにとって他言語のスクリプトが必須で
ある場合には、
DESCRIPTION
の
SystemRequirements
フィールドに対応するプログラミング言語を
追加するのを忘れないようにしましょう。このフィールドは人が読むためものですので、正確な指
定方法を気にする必要はありません。
Java
の場合は特別で、ソースコード（ソースコードは
java/
に置き、
.Rinstignore ...
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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.