alexaltair

http://guides.rubygems.org/make-your-own-gem/ http://www.intridea.com/blog/2012/3/8/polishing-rubies-part-ii

gem yank my-gem -v0.0.0

--Before pushing a new version of a gem... change version number in gemspec

bundle git add . git status git commit

alexaltair

From https://github.com/beeminder/beeminder-gem/blob/master/lib/beeminder.rb

# local libs
Dir["#{File.join(File.dirname(__FILE__), "beeminder")}/*.rb"].each do |lib|
  require lib
end

alexaltair

def fibonacci(n)
  if (0..1) === n
    n
  else
    fibonacci(n-1) + fibonacci(n-2)
  end
end

def prime_list(highest)
  list = Array.new(highest, true)

alexaltair

In class definitions,

attr_accessor :name, :email, :phone_number

is the same as

attr_reader :name, :email, :phone_number

alexaltair

The first thing that really surprised me today was the flexibility of Ruby's shovel operator, <<. A student in the class had tried the following:

a = [0]
a << a

What do you think a is now? I was sure it would be [0, [0]]. But lo and behold, Ruby sparkles;

a = [0]
a << a