September 2011
Intermediate to advanced
612 pages
15h 48m
Japanese
Content preview from Making Software ―エビデンスが変えるソフトウェア開発
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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.
124
8
章 コード行数を超えて：さらなる複雑度メトリクスは必要か
?
例
8-1
に
ABS
のビルドスクリプト例のヘッダ部分を示します。ヘッダに含まれているのは、ソース
を集め、パッケージアーカイブからその他の依存関係を取り出し、ビルドが終った後でパッケージを分
類するための、メタ情報です。私たちは例
8-1
においてマル数字を付した箇所の情報を使って、
ArchLinux
アーカイブのすべてのパッケージのソースコードを取って来ました。
集められたすべてのソースコードに対して、
SlocCount
ツール（
http://www.dwheeler.com/sloccount
）
を使って、各ファイルのプログラミング言語を判定します。私たちの例題では
C
言語のコードだけを用
い、
cmetrics
パッケージの
Libresoft
により、各種のサイズおよび複雑性のメトリクスを計測しました
（
http://tools.libresoft.es/cmetrics
）。
計測の例
表
8-1
に、本調査で使用したすべてのメトリックと、後の表や図で出てくるメトリクスを表す記号
をまとめています。
表
8-1
研究対象に選んだメトリック
測定対象 メトリック（記号）
サイズ ソースコード行数（
SLOC
）、ないしコード行数（
LOC
）
関数の数（
FUNC
）
複雑度
McCabe
の循環複雑度（
cyclomatic complexity
）：全関数の最大値（
MCYCLO
）
McCabe
の循環複雑度：平均（
ACYCLO
）
Halstead
の長さ（
HLENG
）、ボリューム（
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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.