Hashes
Overview
- A Hash looks like my_hash = {:a_symbol => 3, “a string” => 4}
- Are referenced like my_hash[:a_symbol] #=> 3
- like an associative map
Try typing this in IRB
currencies = {‘RWF’ => ‘Rwanda Franc’,
‘USD’ => ‘United States Dollar’}
currencies['RWF'] currencies['USD'] currencies['ABC']