Ever seen this error when using Graticule? Numerical argument out of domain - acos Similarly to the to_sql problem for...
The following snippet demonstrates how you could create excel files (with spreadsheet gem) and format columns so that they follow...
You want Photoshop to always open files with "full" (100%) zoom and not try to fit them to your screen...
Though Internet Explorer 9 supports the box-shadow CSS property there is a nasty bug which sometimes prevents it from...
The SQL code generated by Graticule's spherical distance computation is insufficient and can lead to NULL distances in edge...
When used to do: $> cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R...
To show the collation of your tables you have to login to the MySQL console and execute SHOW TABLE STATUS...
Given the problem you have a new column postion and that column should be updated for all existing rows with...
Defining a custom to_json method for your classes can be useful. Do it properly or you will "randomly" get...
Since version 11.10 Opera provides support for linear gradients using -o-linear-gradient. The syntax is pretty similar to Mozilla...
The colors in Rails log files are helpful when watching them but, since they are ANSI color codes like ^[[4...
This will reduce the filesize of foo and bar to 0 bytes: truncate -s0 foo bar If the files do...
cURL makes a web request and shows you the response body. You can redirect the response body to /dev/null just...
If you using gpg for your encrypted backup and it fails after you put it in crontab make sure you...
Use the PDF toolkit: sudo apt-get install pdftk To rotate page 1 by 90 degrees clockwise: pdftk in.pdf cat...
Chosen is a JavaScript plugin that makes long, unwieldy select boxes much more user-friendly. It is currently available in...
When you have a program running in a hidden X screen (like with Xvfb for Selenium tests) you may want...
The Javascript code below is a rough equivalent to the simple_format helper that ships with Rails: function simpleFormat(str...
Resque comes with its own dashboard (Resque server) that you can mount inside your Rails 3 application with #config/routes.rb:
When you create a temporary file (e.g. to store a generated Excel sheet) and try to send it to the...
When have you last used your caps lock key? On purpose? Right... In Gnome Make it an additional ESC key...
With gem dependency it is possible to check the dependencies for your gem before you install it.
You can say: $(element).is(':visible') and $(element).is(':hidden') jQuery considers an element to be visible if it...
When you render a nested form for a Movie which has_many :actors, you want to render the right number...