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$ irb irb(main):001:0> x = 10 => 10 irb(main):002:0> [1..x] => [1..10] irb(main):003:0> [1..x].to_a => [1..10] irb(main):004:0> a = [1..x] => [1..10] irb(main):005:0> a[0] => 1..10 irb(main):006:0> a[0].class => Range irb(main):011:0> Array(1..x) => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] irb(main):012:0> (1..x).class => Range irb(main):013:0> (1..x).to_a => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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