Open source software lines of code

Previous books in the AOSA series have done this by describing the high-level architecture of several mature open-source projects. While the lessons learned from those stories are valuable, they are sometimes difficult to absorb for programmers who have not yet had to build anything at that scale. Each chapter consists of a walkthrough of a program that solves a canonical problem in software engineering in at most source lines of code.

We hope that the material in this book will help readers understand the varied approaches that engineers take when solving problems in different domains, and will serve as a basis for projects that extend or modify the contributions here. Skip to content. Star Branches Tags. Could not load branches. Could not load tags. Latest commit. But large closed-source projects — over one million lines of code — tend to have 33 percent fewer errors than small closed-source projects, with.

And small open source projects have a massive 70 percent fewer errors than large open source software, with only. The difference, according to Coverity, is that small open source projects are labors of love by individual developers or small teams, who carefully comb through their code to reduce errors. Large open source projects, on the other hand, tend to lack standardized processes to ensure code quality, and so the error rate increases.

In commercial or closed-source software, developers experience almost the opposite conditions. Large projects tend to have well-defined formal testing processes, which ensure higher code quality, and small projects tend to be hasty, quick endeavors that show the effects of growing pains, as no standardized testing is in place. Did you miss a featured session? We may collect cookies and other personal information from your interaction with our website.

Through our financial support and student outreach programs, we aim to keep the ecosystem strong. In the spirit of openness, we are sharing the internal documentation that helps Googlers use, patch, and release open source software. This year, Google's summer internships went virtual -- focusing on open source projects.

Learn about some of their accomplishments. The sudden and drastic shift in the open source industry from in-person to online events has surfaced new accessibility challenges. Google partnered with Neighborhood Access to create some best practices for making events more accessible.

Free and open source software has been part of Google's technical and organizational foundation since the beginning. We've launched a new website for Google Open Source that ties together all of our initiatives with information on how we use, release, and support open source. Projects Community Docs Blog. Google Open Source Bringing all the value of open source to Google and all the resources of Google to open source.

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