例1：
a=['a','b','c']
a.each {|x| puts x}

例2：
ps=["EMSD","XIO","DPAD","ISD","DSSD","ASD","VCE","RSA","IIG","N/A"]
ps.each{|x| InnovationProduct.create(:bu=>x,:innovation_product_id=>0)}

例3：
products=InnovationProduct.get_products_by_bu(bu)
productsArray=Array.new
for j in products
  productsArray.push(j.product)
end

a=1
if a==1
    puts 1  #打印1
elsif a==2
    puts 2
else
    puts 3
end

  a=false
  if a
      puts 1
  elsif !a
      puts 2  #打印2
  else
      puts 3
  end

puts "please enter the temperature:"
gets     #输入“aaabbbccc”
puts $_  #输出“aaabbbccc”

:foo
:test