There is a practical short list for valid/invalid example email addresses - Thanks to Florian L.! The definition for valid emails...
Most of the time it is a tedious task to apply a code style guide to an existing code...
I got this error after upgrading Ruby from 2.4.5 to 2.6.4 when I opened the Rails console - rails server still...
When using Chrome for Selenium tests, the chromedriver binary will be used to control Chrome. To debug problems that stem...
With this gem your transaction blocks raise an error when they have side effects that cannot be rolled back.
The ruby sass gem also installs a command line tool to convert to and from SCSS. Use it for a...
Rails is split into a large number of (sub-) frameworks. The most important and central of those are activesupport (extends...
When upgrading Clearance, pay attention whether the password hashing strategy might have changed. Old clearance versions (< 1.0) used SHA1-encrypted...
You can share a state in Ruby with global variables. Even if you should avoid them whenever possible, for debugging...
When an AJAX request raises an exception on the server, Rails will show a minimal error page with only basic...
webpack is a very powerful asset bundler written in node.js to bundle (ES6) JavaScript modules, stylesheets, images, and other assets...
From Ubuntu 17, rbenv fails to install Ruby below 2.4 because of a mismatching OpenSSL dependency: it needs libssl1.0-dev for...
RubyMine comes with a nice way to grep through your project's files: The finder (ctrl + shift + f). Don't...
If your Ruby project includes a gem like Spreewald that comes with some external step definition, RubyMine does not know...
If rspec hangs with no output and you dont get a backtrace neither with --backtrace nor by just killing it...
In Ruby on Rails, all objects have a useful blank? method. It returns true for nil but also for empty...
The gem json fails to install for Ruby 2.5 if you use a version equal or below 1.8.3.
When installing a gem you can use version comparators like >= or ~>. That way it is possible to fetch the latest...
Cucumber up to version 2 had a neat feature called Step Argument Transforms which was dropped in favor of Cucumber...
If you get requests with values for formats like this: {:locale=>[:de], :formats=>["../../../../../../../../../../etc/services{{"], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby...
Until Capybara 2, node finders that accept a text option were able to find nodes based on rendered text, even...
Download buttons can be difficult to test, especially with Selenium. Depending on browser, user settings and response headers, one of...
An alternative of using a multiple assignment for a Regex are named groups. Especially when your Regex becomes more complicates...
Along with a number of other cool new features and performance improvements, Ruby 2.6 added function composition to the Proc...