More solutions for the projecteuler.net problems. Some of them are solved using 1.9.2 features.
One useful (and funny) feature of Ruby is the
Symbol#to_proc method that lets you write concise code like this:
%w|1 2 3 4|.map(&:to_i). Almost everyone who knows this feature loves it ;). However, the use cases are pretty limited, because in most cases you need to pass parameters!
In Ruby, dealing with Arrays and similar objects is pretty fun. And we have gotten more possibilities with Ruby 1.9.2 :)
Transferring an existing project to Rails 3 is not that hard, but it usually cannot be done in 5 minutes.