CODEWITHSUNDEEP
arraysrubyhash
Abdel P.
Abdel P.

Reputation: 738

How to combine array of hashes into one array?

I'm trying to combine an array of hashes like this:

[{:locale=>:"en-US", :key=>:key1}, 
 {:locale=>:"en-US", :key=>:key2}, 
 {:locale=>:da,      :key=>:key1}]

Into one array like this:

['locale', 'en-US', 'key', 'key1', 
 'locale', 'en-US', 'key', 'key2', 
 'locale', 'da',    'key', 'key1']

How can I do this?

Upvotes: 0

Views: 71

Answers (2)

Jurr
Jurr

Reputation: 41

Or, even quicker and easier:

array = [{:locale=>:"en-US", :key=>:key1}, {:locale=>:"en-US", :key=>:key2}, {:locale=>:da, :key=>:key1}]
array.map { |hash| [hash.keys, hash.values] }.flatten

Upvotes: 0

Rajagopalan
Rajagopalan

Reputation: 6064

Input

a=[{:locale=>:"en-US", :key=>:key1}, {:locale=>:"en-US", :key=>:key2}, {:locale=>:da, :key=>:key1}]

Code

result=a.map do |h|
  h.map do|k,v|
    [k,v]
  end
end.flatten
p result

Or

p a.flat_map(&:to_a).flatten

Output

[:locale, :"en-US", :key, :key1, :locale, :"en-US", :key, :key2, :locale, :da, :key, :key1]

Upvotes: 4

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