Ruby/Array/last

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Версия 17:10, 26 мая 2010

Both first and last take integer arguments, indicating the number of elements to return

q1 = %w[ January February March ]
q1.first 2 # => ["January", "February"]
q1.last 0 # => [] not particularly useful

Get the first and last elements of an array is with the first and last methods

q1 = %w[ January February March ]
q1.first # => January
q1.last # => March