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.
423
すべてのバグレポートが修正されるわけではない
を含む
0.281
個のスタックトレースがあること（
115.2%
）が分かりました。
これらの発見が示すことは、重複レポートはバグのありかに対する異なる視点と追加のポインタを提
供してくれていて、開発者がそのバグを修正するのに役に立っている可能性がある、ということです。
たとえば、より多くのスタックトレースがあると、クラッシュの際によく動いていたメソッドが明らか
になり、疑ってみる範囲を狭める役に立ちます。これらの発見は、バグ追跡システムにおける重複レポー
トの扱いと表現方法を再考するための材料になるでしょう。
すべてのバグレポートが修正されるわけではない
ほとんどのプロジェクトが、一定の有限の資源と時間では修正しきれないバグレポートを抱えていま
す。バグレポートの質がバグが修正される確率をどれくらい高めるか、その特徴をつかむために、私た
ちは
Apache
、
Eclipse
、
Mozilla
から
150,000
個（
1
プロジェクトにつき
50,000
個）のバグレポートを
サンプリングしました。これらのバグレポートには、
FIXED
（修正した）、
DUPLICATE
（重複バグ）、
WONTFIX
（修正しない）、
WORKSFORME
（バグが再現しない）などのさまざまな結論がありました。
私たちはバグレポートを
2
つのグループ、成功と不成功に分け、それからカイ二乗検定とクラスカル
=
ウォリス（
Kruskal-Wallis
）検 定（
p<0.5
）などの統計的検定を用いて、成功したバグ報告とそれ情報項 ...
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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.