You login to a Linux server with a performance issue: what do you check in the first minute? uptime
Wondering which processes are placed in your swap you can use this bash oneliner: for file in /proc/*/status ; do...
Once Rails knows a given string is html_safe, it will never escape it. However, there may be times when...
You know that layouting HTML e-mails is terrible. For more fun, check Litmus' list of top 10 e-mail...
PostgreSQL offers a really handy field type: json. You can store any JSON there, in any structure. While its flexibility...
rack-mini-profiler is a powerful Swiss army knife for Rack app performance. Measure SQL queries, memory allocation and CPU...
To delete a certificate request run sudo puppet ca destroy $your.full.hostname on your puppetmaster.
A list of surprisingly clever CSS expressions for common use cases.
There are cases when you need to select DOM elements without jQuery, such as: when jQuery is not available
In developing countries like Nigeria, Opera Mini is used by up to 70% of users on mobile.
Remove some old binaries (commands still exist in geordi) and mark others as deprecated Rewrite deploy command to support...
When you're using feature branches, they will stack up if you don't delete them after the merge to...
Until recently, you could open a new tab via window.open when using execute_script in Selenium tests. It no longer...
The nokogiri gem provides different packages for several platforms. Each platform-specific variant ships pre-built binaries of libxml2, e.g...
We will use this for new Angular code. Consider the guide in "beta". Things will still refine, but the general...
E-mails are usually encoded using Quoted Printable. Here is how to decode or encode such strings. You probably know...
A collection of 700+ svg vector logos. The logos are optimized (removed duplicated paths / excessive groups / empty defs, linting, etc...
Regular expressions in Javascript are represented by a RegExp object. There also is a regex literal as in many other...
You know that Devise offers RSpec test helpers for controller specs. However, in request specs, they will not work.
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
I recommend to go straight to 2.1.5+ without intermediate steps. Otherwhise you burden yourself with unnecessary work of encoding problems...
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...