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.
256
15
章 品質戦争：オープンソース対有償ソフト
義について、互いに異なる識別子の集合と、それぞれの識別子を定義ないし参照しているファイルとを、
導出します。次に中間レベルの
select
文が、ファイルごとの識別子の個数を数え、最外側の
select
文が、
各ファイルが持つ定義を対応する参照と結合し、対応する情報フローメトリックを計算します。このメ
トリックの値がすごく大きいと、変更や構造的な欠陥が起きる確率が高くなるようでした。
コード構造
4
つのシステムのコード構造は、どのようにして類似した問題に対し、さまざまな制御構造や関心事
の分離を駆使して取り組めるかを、具体的に見せてくれます。また、各システムの設計もうかがい知る
ことができます。
図
15-9
は、すべての関数に対する拡張循環複雑度メトリック［
McCabe 1976
］
†
の値の分布を示して
います。この値は、各関数に含まれる独立なパスの個数を測る指標です。ここで示した数は、論理値と
条件演算子を考慮対象に
していますが（これらがパスを追加するため）、複数方向へ分岐する
switch
文
は対象にしていません。理由は、複数分岐命令はクッキーを型抜きするように似た枝を作り、必ずしも
分岐数に比例して結果が変わって来るわけではないと思われるからです。このメトリックはプログラム
のテスト容易性、理解容易性、保守容易性を測定するために設計されました［
Gill and Kemerer
1991
］。この値については、
Linux
は他のシステムよりも高得点であり、
WRK
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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.