Package routing provides a naive router with regular expression support.
When using named sub groups in a regex path, the named groups matched expression will be set on the request's context by it's name. So if you register the route ^/foo/(?P[0-9]+)$ (escaped angle brackets for Github flavoured markdown: ^/foo/(?P<param>[0-9]+)$), you can get it by doing *http.Request.Context().Value("param") in your handler.
The routes can be supplied with metadata though a fluent API to generate HTML documentation.
If regular expression matchings overlap, they take precedence by the order they have been added.