RUBY

ruby inject hash

hash = { foo: 1, bar: 2 }

# sum up all values of the hash
			# start with 0
				  #	/
result = hash.inject(0) { |sum, key_value| sum + key_value.last }
#=> 3

how to access hash value ruby

my_hash.values_at("key1", "key2") #=> ["value1", "value2"]

how to access hash value ruby

my_hash["key"] #=> "value"