We put these examples together because we needed them, and because they seemed instructive. We encourage you to come up with variations of this within your own source tree.
Should wish to contribute examples back, please sign Google's CLA before sending us patches: https://cla.developers.google.com/
The CLA is necessary mainly because you own the copyright to your changes, even after your contribution becomes part of our codebase, so we need your permission to use and distribute your code. We also need to be sure of various other things - for instance that you'll tell us if you know that your code infringes on other people's patents. You don't have to sign the CLA until after you've submitted your code for review and a member has approved it, but you must do it before we can put your code into our codebase.
Before you start working on a larger contribution, you should get in touch with us first through bazel-dev@googlegroups.com.
Contributions made by corporations are covered by a different agreement than the one above, the Software Grant and Corporate Contributor License Agreement.