ruby-on-rails - 我如何遍历一个哈希，我也可以在其中查看下一个键？

Question

我有一个日期到货币的哈希值，我需要在一组日期之间存入新的货币存款。

所以，假设我的哈希是

{"000000001" => "0.00", "000000002" ="12.34", "000000010" => "5.95"}

我想插入 000000008, 54.34 那么我的结果哈希应该是

{"000000001" => "0.00", "000000002" ="66.68", "000000010" => "5.95"}

*(这些是示例时间戳)

所以...我在想类似...

my_hash.each_with_index do |key_value, index|
  if index == my_hash.length then return my_hash end
    if time >= my_hash[dat[0]][0].to_i and time <= my_hash[dat[0]].next[0].to_i
      my_hash[index][1] += value
    end
  end
end

我知道这是无效的，但我需要帮助。谢谢!

Answer 1

使用each_cons:

{
  "000000001" => "0.00", "000000002" => "66.68", "000000010" => "5.95"
}.each_cons(2) do |(prev_key, prev_value), (next_key, next_value)|
  p "#{prev_key} preceedes #{next_key}"
end