How to merge Ruby hashes

Question

How can I merge these two hashes:

{:car => {:color => \"red\"}}
{:car => {:speed => \"100mph\"}}

To get:

{:car          


        

Answer 1

Hash#deep_merge

Rails 3.0+

a = {:car => {:color => "red"}}
b = {:car => {:speed => "100mph"}}
a.deep_merge(b)
=> {:car=>{:color=>"red", :speed=>"100mph"}} 

Source: https://speakerdeck.com/u/jeg2/p/10-things-you-didnt-know-rails-could-do Slide 24

Also,

http://apidock.com/rails/v3.2.13/Hash/deep_merge