Modern code review a case study at google

Code review sometimes referred to as peer review is a software quality assurance activity in which one or several people check a program mainly by viewing and reading parts of its source code , and they do so after implementation or as an interruption of implementation. At least one of the persons must not be the code's author. The persons performing the checking, excluding the author, are called "reviewers". Although direct discovery of quality problems is often the main goal, [3] code reviews are usually performed to reach a combination of goals: [4] [5]. The above-mentioned definition of code review delimits it against neighboring but separate software quality assurance techniques: In static code analysis the main checking is performed by an automated program, in self checks only the author checks the code, in testing the execution of the code is an integral part, and pair programming is performed continuously during implementation and not as a separate step.
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Expectations, Outcomes, and Challenges of Modern Code Review

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MC² Series: Modern Code Contributed Talks | Colfax Research

All of the tools and processes of code review are designed to this end. First, developers must be able to make progress on their tasks. If you never submit an improvement to the codebase, then the codebase never improves. Also, if a reviewer makes it very difficult for any change to go in, then developers are disincentivized to make improvements in the future.
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MC² Series: Modern Code Contributed Talks

There's a lot of ego involved, it's slow and cumbersome, it's emotionally painful, and the metaphor is wrong a panel of judges inspecting a lone defendant rather than a team collaborating on an engineering artifact. I recently had the opportunity to work with other developers on a project by displaying a laptop onto a giant screen while we all sat on a couch and drank coffee: it was fun and we produced a high quality result. After years of code review, on the other hand, I can say that code review is painful, expensive, and mediocre. I'm hoping that as software 'eats the world' and provides ever more value to larger numbers of people, companies will realize that putting a single developer on an engineering problem, and having the solution be submitted for review to the rest of the team after the solution has been designed is both unkind to your employees and bad business.
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With the advent of large code repositories and sophisticated search capabilities, code search is increasingly becoming a key software development activity. In this work we shed some light into how developers search for code through a case study performed at Google, using a combination of survey and log-analysis methodologies. Our study provides insights into what developers are doing and trying to learn when performing a search, search scope, query properties, and what a search session under different contexts usually entails. Our results indicate that programmers search for code very frequently, conducting an average of five search sessions with 12 total queries each workday.
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