Arrays and Hashes

Array Constructor Operator

• List literals can include a list constructor operator.
• This operator (..) allows you to specify an ordered range of ascending numbers from a starting and ending number (inclusive).
• Example:
  

  (3 .. 5) # Same as (3, 4, 5) 
  (3.14 .. 6.14) # Same as (3.14, 4.14, 5.14, 6.14) 
  (10 .. 5) # The empty list (can't count down). 
  

• This operator (..) can be safely combined with other list literal constructs.
• Example:
  

  (1 .. 3, 5, 7..9) # Same as (1,2,3,5,7,8,9)