Sort hash by key, return hash in Ruby

Question

Would this be the best way to sort a hash and return Hash object (instead of Array):

h = {\"a\"=>1, \"c\"=>3, \"b\"=>2, \"d\"=>4}
# => {\"a\"=         


        

Answer 1

Sort hash by key, return hash in Ruby

With destructuring and Hash#sort

hash.sort { |(ak, _), (bk, _)| ak <=> bk }.to_h

Enumerable#sort_by

hash.sort_by { |k, v| k }.to_h

Hash#sort with default behaviour

h = { "b" => 2, "c" => 1, "a" => 3  }
h.sort         # e.g. ["a", 20] <=> ["b", 30]
hash.sort.to_h #=> { "a" => 3, "b" => 2, "c" => 1 }

Note: < Ruby 2.1

array = [["key", "value"]] 
hash  = Hash[array]
hash #=> {"key"=>"value"}

Note: > Ruby 2.1

[["key", "value"]].to_h #=> {"key"=>"value"}