access each value of each hash inside an array

Question

I'm learning Ruby and I would like to know how to pick each :values I have stored in all the hashes inside an array at once. The data structure looks like this (with more hashes):

[ { :label => "Grid Singularity ", :values => [44, 1] }, { :label => "iamsmart ", :values => [44, 1] } ]

If I do:

data_hash[0][:values] #=> [44, 1]

I can get the values of the first hash, but, how can I select each :values array at once? My goal is to be able to do the same operation with each :values without having to select them one by one (it's a very long list!)

Thank you so much for your help!

Your data_hash is actually an array.

Sagar Pandya
– Sagar Pandya

2017-09-23 20:46:54 +00:00
Commented Sep 23, 2017 at 20:46 — Sagar Pandya
– Sagar Pandya, Commented Sep 23, 2017 at 20:46

Sebastián Palma · Accepted Answer · 2017-09-23 20:36:45Z

You can use map to get a new array just taking the value of each values keys from the main hash, like:

hash = [ {:label=>"Grid Singularity ", :values=>[44, 1]}, {:label=>"iamsmart ", :values=>[44, 1]} ] p hash.map { |el| el[:values] } # => [[44, 1], [44, 1]]

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