2018-08-30 14:18:55 +02:00
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// run-pass
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2015-01-08 02:25:56 +01:00
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2014-08-04 18:58:06 -07:00
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fn match_on_local() {
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2022-07-07 04:36:10 +02:00
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let mut foo: Option<Box<_>> = Some(Box::new(5));
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2014-08-01 19:38:10 -07:00
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match foo {
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None => {},
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Some(x) => {
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foo = Some(x);
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}
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2014-08-04 18:58:06 -07:00
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}
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2014-08-01 19:38:10 -07:00
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println!("'{}'", foo.unwrap());
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}
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2014-08-04 18:58:06 -07:00
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2015-01-25 22:05:03 +01:00
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fn match_on_arg(mut foo: Option<Box<i32>>) {
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2014-08-04 18:58:06 -07:00
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match foo {
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None => {}
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Some(x) => {
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foo = Some(x);
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}
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}
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println!("'{}'", foo.unwrap());
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}
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fn match_on_binding() {
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2015-02-15 09:52:21 +01:00
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match Some(Box::new(7)) {
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2014-08-04 18:58:06 -07:00
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mut foo => {
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match foo {
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None => {},
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Some(x) => {
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foo = Some(x);
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}
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}
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println!("'{}'", foo.unwrap());
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}
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}
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}
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fn match_on_upvar() {
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2022-07-07 04:36:10 +02:00
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let mut foo: Option<Box<_>> = Some(Box::new(8));
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2015-02-01 12:44:15 -05:00
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let f = move|| {
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2014-08-04 18:58:06 -07:00
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match foo {
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None => {},
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Some(x) => {
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foo = Some(x);
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}
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}
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println!("'{}'", foo.unwrap());
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2014-11-26 08:12:18 -05:00
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};
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f();
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2014-08-04 18:58:06 -07:00
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}
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fn main() {
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match_on_local();
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2022-07-07 04:36:10 +02:00
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match_on_arg(Some(Box::new(6)));
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2014-08-04 18:58:06 -07:00
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match_on_binding();
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match_on_upvar();
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}
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