sang-w0o / gobyexample

Go by Example

Go by Example

Content and build toolchain for Go by Example, a site that teaches Go via annotated example programs.

Overview

The Go by Example site is built by extracting code and comments from source files in examples and rendering them via the templates into a static public directory. The programs implementing this build process are in tools, along with dependencies specified in the go.modfile.

The built public directory can be served by any static content system. The production site uses S3 and CloudFront, for example.

Building

To build the site you'll need Go installed. Run:

$ tools/build

To build continuously in a loop:

$ tools/build-loop

To see the site locally:

$ tools/serve

and open http://127.0.0.1:8000/ in your browser.

Publishing

To upload the site:

$ export AWS_ACCESS_KEY_ID=...
$ export AWS_SECRET_ACCESS_KEY=...
$ tools/upload

License

This work is copyright Mark McGranaghan and licensed under a Creative Commons Attribution 3.0 Unported License.

The Go Gopher is copyright Renée French and licensed under a Creative Commons Attribution 3.0 Unported License.

Translations

Contributor translations of the Go by Example site are available in:

• Chinese by gobyexample-cn
• Czech by martinkunc
• French by keirua
• Italian by the Go Italian community
• Japanese by spinute
• Korean by mingrammer
• Russian by badkaktus
• Spanish by the Go Mexico community
• Ukrainian by butuzov

Thanks

Thanks to Jeremy Ashkenas for Docco, which inspired this project.

FAQ

I'm getting output in a different order from the example. Is the example wrong?

Some of the examples demonstrate concurrent code which has a non-deterministic execution order. It depends on how the Go runtime schedules its goroutines and may vary by operating system, CPU architecture, or even Go version.

It doesn't mean anything is wrong with the example. Typically the code in these examples will be insensitive to the actual order of the output; if the code is sensitive to the order - that's probably a bug - so feel free to report it.