2018-08-30 07:18:55 -05:00
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// run-pass
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2015-03-22 15:13:15 -05:00
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2015-03-25 19:06:52 -05:00
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fn select<'r>(x: &'r Option<isize>, y: &'r Option<isize>) -> &'r Option<isize> {
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2012-09-23 07:39:39 -05:00
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match (x, y) {
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(&None, &None) => x,
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(&Some(_), _) => x,
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(&None, &Some(_)) => y
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}
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}
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2013-02-01 21:43:17 -06:00
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pub fn main() {
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2012-09-23 07:39:39 -05:00
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let x = None;
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let y = Some(3);
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2013-08-03 18:59:24 -05:00
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assert_eq!(select(&x, &y).unwrap(), 3);
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2013-02-14 13:47:00 -06:00
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}
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