2013-04-10 23:57:08 -07:00
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def range_expand(rng)
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2015-11-18 06:14:39 +00:00
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rng.split(',').flat_map do |part|
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2013-04-10 23:57:08 -07:00
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if part =~ /^(-?\d+)-(-?\d+)$/
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($1.to_i .. $2.to_i).to_a
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else
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Integer(part)
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end
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2015-11-18 06:14:39 +00:00
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end
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2013-04-10 23:57:08 -07:00
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end
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p range_expand('-6,-3--1,3-5,7-11,14,15,17-20')
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