如何迭代数组的散列

Question

我是ruby的新手，想了解如何通过下面的散列来遍历此数组。

这里是我的代码：

x = {:country => "china", :people=>'chinese'} 
y = {:country => "india", :people=>'indians'} 
z = {:country => "iran", :people=>'iranians'} 

countries = [x, y, z] 

我想为我的代码吐出：

'你有3个国家的

的第一个名字是：中国 第二个名字是：印度 第三个名字是伊朗

Answer 1

我把它表示为：

x = {:country => "china", :people=>'chinese'} 
y = {:country => "india", :people=>'indians'} 
z = {:country => "iran", :people=>'iranians'} 

countries = [x, y, z] 

如果是这样，你可以通过做

puts "You have #{countries.size}" 

对于每一个国家的名字输出得到数，你可以这样做：

countries.each_with_index do |country, index| 
    puts "#{index}. #{country[:country]}" 
end 

Answer 2

x = {:country => "china", :people=>'chinese'} 
y = {:country => "india", :people=>'indians'} 
z = {:country => "iran", :people=>'iranians'} 

countries = [x, y, z] 

countries.each.with_index(1) do |value, index| 
    puts "The name of country #{index} is #{value[:country]}" 
end