Category talk:Wren-trait: Difference between revisions
Content added Content deleted
(→Source code: Comparable now inherits from Cloneable.) |
(→Source code: Added two more constructors to Stepped class.) |
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_seq = seq |
_seq = seq |
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_step = (step < 1) ? 1 : step // minimum step of 1 |
_step = (step < 1) ? 1 : step // minimum step of 1 |
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} |
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// Ensures a range is ascending before passing it to the constructor. |
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// It it isn't, returns an empty range. Useful when bounds are variable. |
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static ascend(range, step) { |
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if (!(range is Range)) Fiber.abort("First argument must be a range.") |
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return (range.from <= range.to) ? new(range, step) : 0...0 |
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} |
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// Ensures a range is descending before passing it to the constructor. |
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// It it isn't, returns an empty range. Useful when bounds are variable. |
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static descend(range, step) { |
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if (!(range is Range)) Fiber.abort("First argument must be a range.") |
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return (range.from >= range.to) ? new(range, step) : 0...0 |
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} |
} |
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