"Building Web Apps with HTML5: Beyond the Buzzword" Follow-up

Just completed the Building Web Apps with HTML5: Beyond the Buzzword at RailsConf. The tutorial was well organized, had a quick pace and finished early, which is a good sign in my book. I'm not a fan of having a mad rush at the end to get everything finished. The tutorial itself was mostly self-directed with some discussion throughout so I'm not sure how much value was added by the instructor or doing it as a group.

Overall, well worth the time to get your feet wet with these emerging technologies. You can complete the tutorial yourself at: https://github.com/subelsky/html5tutorial. Thanks Mike Subelsky for your efforts.

One useful resource referenced throughout the tutorial is the website Dive into HTML5. Check it out.

What Git revision is deployed to Heroku?

Updated: Does not work on Heroku's Cedar stack.

If you want to know which revision has been deployed to Heroku execute the following command in your project:

heroku console "ENV['COMMIT_HASH']"

Credit: http://stackoverflow.com/questions/2281772/view-remote-git-revision-on-heroku/4609925#4609925

Compare Git Branches, Compare Two Files in Different Branches

Git offers a couple of great commands for comparing branches. To get a comparison of branches in a "status" type format:

git diff --name-status branch1..branch2

Will give you output something like:

M       config/boot.rb
M       config/database.yml
M       config/deploy.rb
M       config/environment.rb
M       config/environments/development.rb
M       config/environments/production.rb
M       config/environments/staging.rb

Now that you have a list of files, you may wish to get a diff of a specific file:

git difftool branch1:config/environment.rb branch2:config/environment.rb

On OSX, this will open the awesome FileMerge.app allowing you to compare both files.