I am reading about regular expressions now, it starting to make sense. Thanks!

This is the syntax of regular expressions, you have to search about this topic if you don't know it.

This will add a space before every capital letter regardless of whether it is part of a camelcased word...

The instructions tell you about the partition method.

This is obviously reading the instructions.

The example even used partition with a block...

Yeaaah! Nice, man. :)

Hey @gregziolo, sup? The documentation for the max_by method: http://ruby-doc.org/core-2.2.2/Enumerable.html#method-i-max_by

They get the max value from an Enumerable, in this case a list.

The &block is the block you pass as a parameter for the max_by. e.g

def max_by list, &block
  list.max_by(&block)
end

max_by ['hi', 'foo', 'bigger'] { |x| x.length }
# => 'bigger'

Any doubt, please reply! :D

this is obviouosly cheating