how to iterate through hash and get keys ruby code example

Example 1: iterate over each key value in hash ruby

restaurant_menu = { "Ramen" => 3, "Dal Makhani" => 4, "Coffee" => 2 }
restaurant_menu.each do | item, price |
  puts "#{item}: $#{price}"
end

Example 2: iterating over hash, ruby

# iterating_over_hashes.rb

person = {name: 'bob', height: '6 ft', weight: '160 lbs', hair: 'brown'}

person.each do |key, value|
  puts "Bob's #{key} is #{value}"
end


#Returns
#Bob's name is bob
#Bob's height is 6 ft
#Bob's weight is 160 lbs
#Bob's hair is brown