Know your Haml comments

Internet Explorer 5+ is aware of conditional comments that let you target HTML for selected versions of IE. For example the HTML below would ask users of IE 6 and IE 7 to install Firefox:

<!--[if ...

You know those helper methods that just render some HTML but look weird because of content_tags all over the place? You could also use Haml instead.

Example

Consider the following helper.

def greeting
  message = ''.html_safe
 ...

String#indent is not a standard Ruby method. When you use it, be sure to know where this method comes from. Many Gems shamelessly define this method for internal usage, and you'll never know when it may be removed (since it's usually not part of...

Code comments allow for adding human readable text right next to the code: notes for other developers, and for your future self.

As always, with great power comes great responsibility. Code comments can go wrong in many ways: they may become outd...

When you develop a gem and you have a Gemfile in your project directory, you might be surprised that your gem dependencies aren't already required in your specs. Here is some info that should help you out:

• Bundler actually doesn't automatical...

Rails comes with a Rake task notes that shows code comments that start with "TODO", "FIXME", or "OPTIMIZE".

While it's generally not good practice to leave them in your cod...

This is about converting Haml to ERB and not the other way round which you probably want!

This process can not be automated 100%, but you can still save time.

First do

script/plugin install http://github.com/cgoddard/haml2erb.git

Then in...

To set a cookie in your test browser for cucumber tests, you can use this step:

Given /^I have a "([^\"]+)" cookie set to "([^\"]+)"$/ do |key, value|
  headers = {}
  Rack::Utils.set_cookie_header!(headers, key, value)
  cookie_string = h...