Ruby Unique Feature – Hashes

Hashes

A hash is a collection of key and value pairs. Use curly braces {} to define a hash. Use brackets [] to get a value of a key from a hash.

Define a hash like below

nations = { ‘ID’ => ‘Indonesia’ , ‘MY’ => ‘Malaysia’, ‘SG’ => ‘Singapore’ }

To add a key value pair to hash

nations[‘BN’] = ‘Brunei Darussalam’

To output value of a key in hash

puts nations[‘ID’]

To output a hash entirely

puts nations

Bye for now !

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