31 lines
1.1 KiB
Rust
31 lines
1.1 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// The `for` loop use to keep a mutable borrow when executing its body,
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// making it impossible to re-use the iterator as follows.
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// https://github.com/rust-lang/rust/issues/8372
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//
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// This was fixed in https://github.com/rust-lang/rust/pull/15809
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pub fn main() {
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let mut for_loop_values = Vec::new();
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let mut explicit_next_call_values = Vec::new();
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let mut iter = range(1i, 10);
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for i in iter {
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for_loop_values.push(i);
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explicit_next_call_values.push(iter.next());
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}
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assert_eq!(for_loop_values, vec![1, 3, 5, 7, 9]);
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assert_eq!(explicit_next_call_values, vec![Some(2), Some(4), Some(6), Some(8), None]);
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}
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