Array of hashes to hash

Question

For example, I have array of single hashes

a = [{a: :b}, {c: :d}]

What is best way to convert it into this?

{a: :b, c: :d}
         


        

Answer 1

You can transform it to array [[:a, :b]] and after that translate everything to hash {:a=>:b}

# it works like [[:a, :b]].to_h => {:a=>:b}

[{a: :b}, {c: :d}].map { |hash| hash.to_a.flatten }.to_h

# => {:a=>:b, :c=>:d}