用另一个替换散列中的一个匹配值 [英] Replace one matched value in a hash with another

问题描述

我有一个散列数组：

I have an array of hashes:

arr = [
  {:key1=>"one", :key2=>"two", :key3=>"three"},
  {:key1=>"four", :key2=>"five", :key3=>"six"},
  {:key1=>"seven", :key2=>"eight", :key3=>"nine"}
]

我想用<$ c替换：key1 的值$ c>replacement if ：key = one。

and I would like to search through and replace the value of :key1 with "replaced" if :key = "one".

结果数组读取：

The resultant array would then read:

arr = [
  {:key1=>"replaced", ;key2=>"two", :key3=>"three"},
  {:key1=>"four", ;key2=>"five", :key3=>"six"},
  {:key1=>"seven", ;key2=>"eight", :key3=>"nine"}
]

任何人都可以指向正确的方向吗？

Can anyone point me in the right direction?

推荐答案

尝试使用下面的代码来查看它是否解决了您的问题。

Try to use the following code to see if it solves your problem

arr.each { |item| item[:key1] = "replaced" if item[:key1] == "one" }

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