Get rid of dead keys under XFCE

TLDR: sass >= 1.35.0 has the option quietDeps to silence deprecation warnings from dependencies.

quietDeps: If true, the compiler must not print deprecation warnings
for stylesheets that are transitively loaded through an import pat...

If you worked with a system Ruby before switching to RVM, this system Ruby will be in your way when you switch between projects with/without RVM.

It's hard to get rid of your system Ruby entirely, but you can tell RVM to just use a given Ruby by ...

If you get this warning on your local machine one of these steps might help:

Rebuilt the gem with the newer library

gem install --no-rdoc --no-ri nokogiri -- --with-xml2-include=/opt/local/include/libxml2 --with-xml2-lib=/opt/local/lib

...

Removing duplication from the code is a seemingly easy task. In many cases it is pretty straight-forward – you look at similar bits of code and you move them to a common method or class that is reusable in other places. Right? No, not really. It i...

Problem:

Keyboard layout reverting to US on (every) reboot

Cause:

I found the same problem, but only on my wife's account. I'd set her keyboard layout to UK through Gnome preferences and every time the US layout would reappear and be selected...

To get your F12 key back for other shortcuts, stop Tilda:

killall tilda

To prevent Tilda from starting on boot you can remove it

sudo apt-get remove tilda

or disable auto start:

• Go to Mate Control Center > Startup Applica...

When two elements with display: inline-block are sitting next to each other, whitespace between becomes a space character.

Solutions, in decreasing order of awesomeness:

1. Don't have whitespace between two elements! See [Whitespace Removal in...

RubyMine: Set specific Ruby version per project

Use Socket.gethostname. So for a machine whose hostname is "happycat", it will look like this:

>> Socket.gethostname
=> "happycat"

That should work right away for your Rails application. For plain Ruby, you first need to do:

requi...

Deadlocks only occur if two transactions in separate threads compete for the same rows in the database. They usually (but not necessarily) only happen when trying to update or otherwise lock several rows in different order.

Solving deadlocks is p...