e2807a4565
This is the second of two parts of #8991, now possible as a new snapshot has been made. (The first part implemented the unreachable!() macro; it was #8992, 6b7b8f2682.) ``std::util::unreachable()`` is removed summarily; any code which used it should now use the ``unreachable!()`` macro. Closes #9312. Closes #8991.
36 lines
896 B
Rust
36 lines
896 B
Rust
struct Foo {
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string: ~str
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}
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pub fn main() {
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let x = ~[
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Foo { string: ~"foo" },
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Foo { string: ~"bar" },
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Foo { string: ~"baz" }
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];
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match x {
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[ref first, ..tail] => {
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assert!(first.string == ~"foo");
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assert_eq!(tail.len(), 2);
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assert!(tail[0].string == ~"bar");
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assert!(tail[1].string == ~"baz");
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match tail {
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[Foo { _ }, _, Foo { _ }, .. _tail] => {
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unreachable!();
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}
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[Foo { string: ref a }, Foo { string: ref b }] => {
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assert_eq!("bar", a.slice(0, a.len()));
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assert_eq!("baz", b.slice(0, b.len()));
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}
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_ => {
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unreachable!();
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}
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}
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}
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_ => {
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unreachable!();
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}
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}
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}
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