How to split up an array into a multi-dimensional array

Question

I have this array:

parsed_data = ["Mike Henry,7/7/87,Oakland,831 123-2758", "David Jordan,12/30/92,Bangkok,831 229-1234", "Matt Rosen,5/21/89,Seattle,925 518-9933"]

I would like to convert it to:

[["Mike Henry", "7/7/87", "Oakland", "831 123-2758"],["David Jordan", "12/30/92", "Bangkok", "831 229-1234"],["Matt Rosen", "5/21/89", "Seattle", "925 518-9933"]]

I have tried

parsed_data = parsed_data.each do |file|
  file.split(",")
end

but it returns my original array. Any help is greatly appreciated!

Might be a duplicate depending upon your interpretation: stackoverflow.com/questions/5254128/arrayeach-vs-arraymap — squiguy
– squiguy, Commented May 10, 2013 at 0:34

KARASZI István · Accepted Answer · 2013-05-10 00:29:27Z

5

You should use Enumerable#map, because Enumerable#each will just iterate through the items, but #map will create a new array from the return value of the block:

parsed_data.map { |data| data.split(',') }

answered May 10, 2013 at 0:29

KARASZI István

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1 Comment

emailnitram Over a year ago

ahh I totally forgot how to use map. Thanks a lot!

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