RosettaCodeData/Task/Apply-a-callback-to-an-array/Crystal/apply-a-callback-to-an-array-1.cr

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Crystal
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2023-07-01 11:58:00 -04:00
values = [1, 2, 3]
new_values = values.map do |number|
number * 2
end
puts new_values #=> [2, 4, 6]