Hana 9e216da9ef go.mod: add go.mod and move pygments to third_party

After go1.16, go will use module mode by default,
even when the repository is checked out under GOPATH
or in a one-off directory. Add go.mod, go.sum to keep
this repo buildable without opting out of the module
mode.

> go mod init github.com/mmcgrana/gobyexample
> go mod tidy
> go mod vendor

In module mode, the 'vendor' directory is special
and its contents will be actively maintained by the
go command. pygments aren't the dependency the go will
know about, so it will delete the contents from vendor
directory. Move it to `third_party` directory now.

And, vendor the blackfriday package.

Note: the tutorial contents are not affected by the
change in go1.16 because all the examples in this
tutorial ask users to run the go command with the
explicit list of files to be compiled (e.g.
`go run hello-world.go` or `go build command-line-arguments.go`).
When the source list is provided, the go command does
not have to compute the build list and whether it's
running in GOPATH mode or module mode becomes irrelevant.

2021-02-15 16:45:26 -05:00

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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 some vendor'd dependencies in vendor and third_party.

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 and Python installed. Run:

$ go get github.com/russross/blackfriday
$ 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:

$ gem install aws-sdk
$ 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:

Thanks

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

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