Ruby and Rails
Jason Dew

Ruby

pure OO

42.methods.sort

beautiful

def fib n
return 0 unless n > 0
return 1 if [1,2].include? n
fib(n-1) + fib(n-2)
end
puts fib(10) # => 55

Symbols

roygbiv = [:red, :orange, :yellow,
:green,
:blue, :indigo, :violet]
some_hash = { :bar => bar, :life => 42 }

blocks

array = [42, bar, [x]]
result = array.map do |element|
element * 2
end
puts result.inspect
# => [84, barbar, [x, x]]

classes