Print output often loses links, QR codes, and image quality. CSS print styles can add link URLs, better graphics, and browser preview support.

Create CSS gradients, borders, noise textures and box shadows visually, then copy ready-to-use CSS or SASS output.

CSS hacks can target specific browsers or browser versions to work around rendering bugs and compatibility issues without abandoning robust styles.

Touch-capable devices make it important to handle mouse and touch input together in web apps, including multi-touch browser events.

&:test works for private methods in Ruby 1.8 but raises NoMethodError in Ruby 1.9 and 2.0.

BigDecimal#floor returns different types in Ruby 1.8 and 1.9 because it depends on Float#floor; a backport restores the Ruby 1.9 behavior on Ruby 1.8.

Moving a Chrome or Chromium profile to a fresh system is possible by copying the local profile directory instead of creating an online account.

Ruby heredocs interpolate by default; single-quoted heredoc markers disable interpolation and keep backslash escapes literal.

Browsers often cache favicons too aggressively, so a site can show an outdated icon or one from another local project. Adding a version query string forces a fresh reload.

Load a compressed MySQL dump directly from a remote server over SSH with a progress bar, without copying or unpacking the file first.

Capistrano deployments can stall at a Username: prompt when Bundler fetches a gem from a broken GitHub :git URL and receives a 404.

Practical crash courses for founding a startup, raising funding, and testing ideas before building too much.

Test XPath queries directly in the browser console to inspect page elements without extra tools; Safari, Chrome, and Firefox support this in different ways.

Find the Ubuntu release codename or version from system files or lsb_release when you need the exact distribution name for troubleshooting or support.

SFLPhone can fail to launch when a stale PID file makes the daemon look already running; removing ~/.cache/sflphone/sfl.pid usually fixes it.

Firefox 22 blocks third-party cookies by default, limiting advertiser tracking across sites and giving visited websites control over cookie setting.

MongoMapper support for Rails 2.3.x on Ruby 1.9 via a forked gem branch; compatible with Ruby 1.8.7, REE, and Ruby 1.9.3.

Ruby 1.9 changes Module.const_defined? to search ancestors by default, so code checking constants can return different results than on Ruby 1.8.

Named scopes in Rails 2.3 can hide reusable query filters; extracting their conditions makes them easier to inspect and reuse in other queries.

Ruby 1.9 can raise invalid byte sequence in US-ASCII in .js.erb files when templates contain UTF-8 characters; adding @encoding: UTF-8 sets the template encoding.

Ruby 1.9 triggers UTF-8 regexp warnings in Rails 2.3.16+ from ActiveSupport; a monkey patch in config/initializers suppresses them.

Firefox now renders PDF files directly in the browser, which can change how embedded documents appear to users and affect applications that rely on PDF handling.

Need a stable regex result that matches nothing? /(?!)/ returns a valid Regexp object that never matches.