Array In Ruby

To define an array, use:

>> data = []

>> data[0] = 'lady gaga'

>> data[1] = 24

>> data[2] = 'new york'

or
>> data = ['lady gaga', 24, 'new york']

or

>> datas = [
>>       ['lady gaga','new york'],
>>       ['aura kasih','jakarta'],
>>       ['bill clinton','virginia']
>>     ]

To access an element, use the index:

>> puts data[0]     # lady gaga

>> puts datas[1][0]   # aura kasih

To iterate through all elements in the array, use:

>> data.each do |value|

>> puts value

>> end

To repeat the same thing over some times, use:

>> 3.times do

>> puts 'Holla World'

>> end
    
Other methods:

>> data.push 'barack obama'

>> data.pop            # remove and return the last element

>> data.length

>> data.last               # retrieve the last element

Array In Ruby