ruby - How to merge multiple hashes? -

right now, i'm merging 2 hashes this:

department_hash  = self.parse_department html super_saver_hash = self.parse_super_saver html  final_hash = department_hash.merge(super_saver_hash) 

output:

{:department=>{"pet supplies"=>{"birds"=>16281, "cats"=>245512, "dogs"=>513926, "fish & aquatic pets"=>46811, "horses"=>14805, "insects"=>364, "reptiles & amphibians"=>5816, "small animals"=>19769}}, :super_saver=>{"free super saver shipping"=>126649}}

but want merge more in future. example:

department_hash  = self.parse_department html super_saver_hash = self.parse_super_saver html categories_hash  = self.parse_categories html 

how merge multiple hashes?

you can below way using enumerable#inject:

h = {} arr = [{:a=>"b"},{"c" => 2},{:a=>4,"c"=>"hi"}] arr.inject(h,:update) # => {:a=>4, "c"=>"hi"} arr.inject(:update) # => {:a=>4, "c"=>"hi"}