Hash In Ruby

Hash in Ruby is like map in Java:

You can instantiate it like below:

data = {}

or

data = Hash.new

Then you insert an element toward it like below:

data['lady'] = 'gaga'

data['luna'] = 'maya'

data['aura'] = 'kasih'

To iterate to all of the hash, you need to type:

data.each do |key, value|

puts key +': '+value

end

Hash In Ruby