Convert all .flac files in a folder to .m4a

This will allow you to play .flac with iTunes.

It does, however, assume you know how to use a command line prompt.

For Ubuntu

sudo apt-get install ffmpeg

For OS X

brew install ffmpeg

For both

Navigate to the directory in your terminal of choice.

for f in *.flac; do ffmpeg -i "$f" -acodec alac "${f%.flac}.m4a"; done

All credit goes to this Audio-Video Production StackExchange answer.

Beautiful graphical representations of numbers

Link

A beautiful way of representing numbers, made by Stephen Von Worley.

His article about the visualisation can be found here.

The original idea was posted by Brent Yorgey here.

How a network engineer from CloudFlare fixed the internet

Link.

This guy literally fixed the internet. And explains it in simple terms.

Assumed knowledge; DNS, which is what converts google.com into a number that computers use.

Search the children of a nokogiri element using xpath

Just found this little gem.
http://www.williambharding.com/blog/rails/nokogiri-recursively-search-children-from-a-parent/