Ruby/Array/each

# each lets you iterate over every element in an array and do something to it. 
month_a = %w[ nil jan feb mar apr may jun jul aug sep oct nov dec ] 
month_a.each { |e| print e.capitalize + " " }

data = ["1", "2", "3"]
s = ""
data.each { |x| s << x << " and a "}

[1,2,3].each {|i| puts i}
# 1
# 2
# 3
[1,2,3].each do |i|
  if i % 2 == 0
    puts "#{i} is even."
  else
    puts "#{i} is odd."
  end
end
# 1 is odd.
# 2 is even.
# 3 is odd.

[1, 2, 3, 4].each { |x| puts x }
# 1
# 2
# 3
# 4

p [1, 2, 3].each