从哈希数组中选择仅包含在另一个数组中的元素

Question

我有两个数组：

arr = ["test", "hello", "year"]

arr_hashes = [{"value": "yes", "key":"test"},{"value": "no", "key":"hello"},{"value": "noway", "key":"yessir"},{"value": "never", "key":"year"}]

我想返回：

new_arr = [{"value": "yes", "key":"test"},{"value": "no", "key":"hello"},{"value": "never", "key":"year"}]

我没有的东西根本不会过滤：

arr_hashes.select {|x| x['key'].include?(arr)}

Answer 1

与arr.include?(x['key'])

相反

如此

arr_hashes.select { |x| arr.include?(x['key']) }

接收消息include?的对象是一个数组，而参数是您想知道它是否包含在数组中的元素