How to add new item to hash

Question

I\'m new to Ruby and don\'t know how to add new item to already existing hash. For example, first I construct hash:

hash = {item1: 1}

after

Answer 1

It's as simple as:

irb(main):001:0> hash = {:item1 => 1}
=> {:item1=>1}
irb(main):002:0> hash[:item2] = 2
=> 2
irb(main):003:0> hash
=> {:item1=>1, :item2=>2}