XPath matchers can be combined with CSS-selector matchers. This is really useful if not, for example, the content of an element should be matched but the element itself like in the following example. Here a form is used to display data as default value in its input elements. This can be the case in web applications in which data should be edited easily without additional clicks.

Tabs in Vim can be replaced with spaces for consistent indentation across files and platforms, with permanent or temporary settings.

Very nice font for programming.

Ruby code exports a two-dimensional array to an Excel .xls file with a single method call, with the first row used as a bold header. spreadsheet is required and XLS sheets are limited to 65,535 rows.

Build static pages with Rails-like comforts such as HAML, SASS, helpers and partials, then compile everything to plain HTML and CSS.

created_within adds a scope for records created between two timestamps and works on ActiveRecord chains, even when other tables are joined.

Running Ruby executables without bundle exec can silently use the wrong gems and break on other machines. Using bundle exec keeps executions tied to the bundle.

Deleted files are not staged by git add .; git add -u updates tracked files and records removals for commit.

SSH host aliases in ~/.ssh/config make hard-to-remember servers easier to reach and let you use names instead of raw IP addresses.

Parallel test execution can cut long Cucumber, RSpec, or Test::Unit runs by splitting work across CPU cores with parallel_tests and separate test databases.

Recover a copied VirtualBox VM after moving its files without export. Reattach the existing vdi disk to a new machine instead of recreating the whole system.

Ubuntu 10.04 and 10.10 place window controls on the left by default. gconftool-2 restores the minimize, maximize, and close buttons to the right.

Creates a production database dump for a chosen Capistrano stage, copies it into the project tmp directory, and can optionally load it into the local development database.

geordi bundles handy makandra note scripts into one gem for production database dumps, remote gem installs, and running rake tasks across environments.

Internet Explorer 7 can misplace nested position: relative elements after DOM changes, leaving elements redrawn in the wrong spot. JavaScript repaint hacks or overflow: hidden may help.

Faker now reads strings from locale files, which can trigger confusing translation missing errors when locale data is incomplete.

Curb requires libcurl3-dev to compile and install successfully on systems using apt-get.

Releasing a Bundler-based gem needs a version bump, a tagged commit, and a RubyGems push; rake release handles the packaging and publication.

Wrapping a string in this class gives you a prettier way to test for equality.

Reliable Cucumber checks for displayed numbers and monetary amounts prevent false positives from partial matches and accept spaces or nonbreaking spaces before units.

FreeBSD in VMware needs manual setup for installation, VMware Tools, and display resolution. Missing sources under /usr/src can block screen size configuration.

Capybara elements become driver-specific when #node is used, breaking code that should work across Rack::Test and Selenium. Prefer the driver-neutral Capybara API for searches and interactions.

Asset pipeline, HTTP streaming, jQuery as default framework, auto-reversable migrations, identity map for ActiveRecord.

Ruby 1.8.x support will be dropped with or after Rails 4.

Automated installation of the Passenger Apache module avoids interactive prompts and enables non-interactive builds with passenger-install-apache2-module --auto.