Select from Array of Hashes only elements included in another array [duplicate]

Question

I have two arrays:

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

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

I want to return:

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

What I have no which is not filtering at all:

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

Ursus · Accepted Answer · 2019-01-25 00:27:52Z

1

It's simply the other way around arr.include?(x['key'])

so

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

the object which receives the message, include?, is an array, and the parameter is the element you want to know whether it's included or not in the array

edited Jan 25, 2019 at 0:27

answered Jan 25, 2019 at 0:22

Ursus

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2 Comments

user2019182 Over a year ago

This is still returning the original array value. How can I actually return the new set of hashes?

Ursus Over a year ago

This returns the items for which the condition in the select is true. If you got the same array this condition is not working

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