Depending on where you live, different rules are used to determine the number of the week and a weekday. You...
The speed searching for makandra notes in Firefox can be improved by following these steps: Download the Firefox-Add-on...
If you have the following deprecation warning after upgrading to rails >= 2.3.10 DEPRECATION WARNING: The :overwrite_params option is deprecated...
When working with large Sass files you will notice that the first request after a change to a Sass file...
When you click a link or a press a button on a Selenium-controlled browser, the call will return control...
jQuery offers many different methods to move a selection through the DOM tree. These are the most important: $element.find(selector...
When you style multiple adjacent block elements with float: left, they will be rendered next to each other similar to...
When you set both a record's association and that association's foreign key attribute, Rails does not realize you...
So you are comparing two Time objects in an RSpec example, and they are not equal, although they look equal...
In order to cover some edge cases you rarely care about, Range#include? will become very slow in Ruby 1.9...
After updating your RubyGems, you will probably not be able to run Capistrano any more, but receive an error similar...
RubyGems 1.6.0 has undergone some changes which may cause Rails 2.x applications to break with an error like this...
"Wallaby" is the codename for an experimental technology that converts the artwork and animation contained in Adobe® Flash® Professional (FLA...
If you have content inside a page that is hidden by CSS, the following will work with Selenium, but not...
There are two ways to define a class method from a Modularity trait. Note that the usual caveats regarding class...
Sometimes you might want to know if an attribute is an associated object or a simple string, integer etc. You...
If you want to get a deep understanding of how closures, blocks, procs & lambdas in Ruby work, check out the...
MySQL's MIN and MAX functions are for aggregations only. This will not work and produce an error:
My T410 has a NVIDIA graphics card (NVS 3100M). My BIOS configuration looks like this: NVIDIA Optimus is disabled in...
If you use a form (or form fields) multiple times inside one view, Rails will generate the same id attributes...
Flash movies (.swf files) can talk with Javascript code embedded in the same HTML page. There are two ways to...
Although you can access many symbols using the AltGr key you may be missing some, like the en-dash (–) or...
A while ago we were working on an application that had an entire version specially created for mobiles, such as...
Note: For PostgreSQL you should use advisory locks. For MySQL we still recommend the solution in this card.