ruby - 我怎样才能访问一个变量

Question

我有这个数组:

{  
:details=>   [  
      {  
     "account"         =>"",
     "address"         =>"",
     "category"         =>"send",
     "amount"         =>0.0,
     "fee"         =>0.0
  },
  {  
     "account"         =>"payment",
     "address"         =>"SXX5kpEyF8w1oK913wVg2ZbJWpLmWnCgAU",
     "category"         =>"receive",
     "amount"         =>1.0
  }
 ]
}

如何访问 ruby​​ 中的第二个“地址”元素？当我做的时候

address: detail[:address]

我只得到第一个(空的)。

Answer 1

怎么样:

data = {  
:details=>   [  
      {  
     "account"         =>"",
     "address"         =>"",
     "category"         =>"send",
     "amount"         =>0.0,
     "fee"         =>0.0
  },
  {  
     "account"         =>"payment",
     "address"         =>"SXX5kpEyF8w1oK913wVg2ZbJWpLmWnCgAU",
     "category"         =>"receive",
     "amount"         =>1.0
  }
 ]
}

然后(因为，你永远不知道数组中哈希的顺序):

data[:details].detect{|d| !d['address'].empty? }['address']