When using Sidekiq in your application, you must write thread-safe code. This wiki page also lists gems that are...
This looks like it is safe to use: 2.2.1 :001 > a = b = "hello world" "hello world" 2.2.1 :002 > a
Cucumber raises a Cucumber::Ambiguous if more than one step definitions match a step. Our new cucumber_priority gem provides...
Spreewald 1.4.0 comes with this step: When I click on the element ".sidebar" We recommend to define a selector_for...
Logging tcpdump output all the time can create a huge amount of data. This can be both: too much data...
Spreewald 1.3.0 comes with these steps: Then I should see an element ".panel" Then I should not see an element...
Ruby has the class Proc which encapsulates a "block of code". There are 2 "flavors" of Procs: Those with "block...
Activate VI mode by running set -o vi Now use your Bash as if it were VI! Hit Esc to...
This class contains nerdcore things such as disassembling a piece of Ruby into VM calls or enabling tail-call optimization...
As we get an exception notification, when a cron job fails, we wish to have the full backtrace in this...
When there's a Gemfile.lock in your working directory that you cannot remove by either checkout, reset [--hard], stash, probably...
Live markdown previewer (with Github flavored syntax) for VIM. Will open a preview in your browser and update automatically on...
Simply add this to your .rspec instead: --require spec_helper If you are on rspec >= 3 and use a rails_helper.rb...
I had a very frequent cronjob that in rare cases could be relatively slow. To avoid multiple instances of this...
MutationObserver provides developers a way to react to changes in a DOM. Any: insertion, deletion, attribute change – anything. Quickstart: https://...
A very informative and interesting presentation about browsing performance, looking at efforts Google Chrome takes to increase it.
Command line text editor with syntax highlighting, menus (F1), etc. This might be a worthy replacement for nano if you...
From time to time, RubyMine suddenly did not accept any keyboard input and felt crashed, while mouse interaction was still...
Web safe fonts are fonts that are pre-installed by many operating systems. While not all systems have the same...
Table of contents of the linked article: What are Web Fonts? Advantages of Web Fonts Disadvantages of Web Fonts
You can use mail-tester.com to check your application's e-mails for issues that might cause e-mails to be...
A JS library that allows you to embed an iframe that automatically shrinks or expands to match its content.
You can configure a stat socket for haproxy in the global section of the configuration file: global daemon
After restarting an OpenStack host you may encouter problems with missing iptables rules (we're on an quite old release...