用另一个替换散列中的一个匹配值

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：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?